数学要好

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src="http://tk.hustoj.com/data:image/png;base64,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" alt="" />

<span id="MathJax-Element-195-Frame" class="MathJax"><span id="MathJax-Span-98" class="math"><span style="font-size:130%;"><span><span id="MathJax-Span-99" class="mrow"><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-107" class="mi">t</span><span id="MathJax-Span-108" class="texatom"><span id="MathJax-Span-109" class="mrow"><span id="MathJax-Span-110" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">组</span></span></span></span><span id="MathJax-Span-111" class="texatom"><span id="MathJax-Span-112" class="mrow"><span id="MathJax-Span-113" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">数</span></span></span></span><span id="MathJax-Span-114" class="texatom"><span id="MathJax-Span-115" class="mrow"><span id="MathJax-Span-116" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">据</span></span></span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-117" class="mo">,</span><span id="MathJax-Span-118" class="texatom"><span id="MathJax-Span-119" class="mrow"><span id="MathJax-Span-120" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">每</span></span></span></span><span id="MathJax-Span-121" class="texatom"><span id="MathJax-Span-122" class="mrow"><span id="MathJax-Span-123" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">组</span></span></span></span><span id="MathJax-Span-124" class="texatom"><span id="MathJax-Span-125" class="mrow"><span id="MathJax-Span-126" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">数</span></span></span></span><span id="MathJax-Span-127" class="texatom"><span id="MathJax-Span-128" class="mrow"><span id="MathJax-Span-129" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">据</span></span></span></span><span id="MathJax-Span-130" class="texatom"><span id="MathJax-Span-131" class="mrow"><span id="MathJax-Span-132" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">输</span></span></span></span><span id="MathJax-Span-133" class="texatom"><span id="MathJax-Span-134" class="mrow"><span id="MathJax-Span-135" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">入</span></span></span></span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-136" class="mi">a</span><span id="MathJax-Span-137" class="texatom"><span id="MathJax-Span-138" class="mrow"><span id="MathJax-Span-139" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">和</span></span></span></span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-140" class="mi">b</span><span style="font-family:MathJax_Main;" id="MathJax-Span-141" class="mo">,</span><span style="font-family:MathJax_Main;" id="MathJax-Span-142" class="mo">(</span><span style="font-family:MathJax_Main;" id="MathJax-Span-143" class="mn">1</span><span style="font-family:MathJax_Main;" id="MathJax-Span-144" class="mo">&lt;<span style="font-family:MathJax_Main;font-style:normal;font-weight:normal;">=</span></span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-145" class="mi">t</span><span style="font-family:MathJax_Main;" id="MathJax-Span-146" class="mo">&lt;<span style="font-family:MathJax_Main;font-style:normal;font-weight:normal;">=</span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-147" class="mn">233</span><span style="font-family:MathJax_Main;" id="MathJax-Span-148" class="mo">;</span><span style="font-family:MathJax_Main;" id="MathJax-Span-149" class="mn">1</span><span style="font-family:MathJax_Main;" id="MathJax-Span-150" class="mo">&lt;<span style="font-family:MathJax_Main;font-style:normal;font-weight:normal;">=</span></span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-151" class="mi">a</span><span style="font-family:MathJax_Main;" id="MathJax-Span-152" class="mo">,</span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-153" class="mi">b</span><span style="font-family:MathJax_Main;" id="MathJax-Span-154" class="mo">&lt;<span style="font-family:MathJax_Main;font-style:normal;font-weight:normal;">=</span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-155" class="mn">10000</span><span style="font-family:MathJax_Main;" id="MathJax-Span-156" class="mo">,</span><span id="MathJax-Span-157" class="texatom"><span id="MathJax-Span-158" class="mrow"><span id="MathJax-Span-159" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">且</span></span></span></span><span id="MathJax-Span-160" class="texatom"><span id="MathJax-Span-161" class="mrow"><span id="MathJax-Span-162" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">均</span></span></span></span><span id="MathJax-Span-163" class="texatom"><span id="MathJax-Span-164" class="mrow"><span id="MathJax-Span-165" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">为</span></span></span></span><span id="MathJax-Span-166" class="texatom"><span id="MathJax-Span-167" class="mrow"><span id="MathJax-Span-168" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">整</span></span></span></span><span id="MathJax-Span-169" class="texatom"><span id="MathJax-Span-170" class="mrow"><span id="MathJax-Span-171" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">数</span></span></span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-172" class="mo">)</span></span></span></span></span></span>

<span id="MathJax-Element-196-Frame" class="MathJax"><span id="MathJax-Span-173" class="math"><span style="font-size:130%;"><span><span id="MathJax-Span-174" class="mrow"><span id="MathJax-Span-182" class="texatom"><span id="MathJax-Span-183" class="mrow"><span id="MathJax-Span-184" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">如</span></span></span></span><span id="MathJax-Span-185" class="texatom"><span id="MathJax-Span-186" class="mrow"><span id="MathJax-Span-187" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">果</span></span></span></span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-188" class="mi">f<span></span></span><span id="MathJax-Span-189" class="texatom"><span id="MathJax-Span-190" class="mrow"><span id="MathJax-Span-191" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">值</span></span></span></span><span id="MathJax-Span-192" class="texatom"><span id="MathJax-Span-193" class="mrow"><span id="MathJax-Span-194" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">可</span></span></span></span><span id="MathJax-Span-195" class="texatom"><span id="MathJax-Span-196" class="mrow"><span id="MathJax-Span-197" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">以</span></span></span></span><span id="MathJax-Span-198" class="texatom"><span id="MathJax-Span-199" class="mrow"><span id="MathJax-Span-200" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">求</span></span></span></span><span id="MathJax-Span-201" class="texatom"><span id="MathJax-Span-202" class="mrow"><span id="MathJax-Span-203" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">得</span></span></span></span><span id="MathJax-Span-204" class="texatom"><span id="MathJax-Span-205" class="mrow"><span id="MathJax-Span-206" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">，</span></span></span></span><span id="MathJax-Span-207" class="texatom"><span id="MathJax-Span-208" class="mrow"><span id="MathJax-Span-209" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">就</span></span></span></span><span id="MathJax-Span-210" class="texatom"><span id="MathJax-Span-211" class="mrow"><span id="MathJax-Span-212" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">输</span></span></span></span><span id="MathJax-Span-213" class="texatom"><span id="MathJax-Span-214" class="mrow"><span id="MathJax-Span-215" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">出</span></span></span></span><span id="MathJax-Span-216" class="msup"><span><span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-217" class="mi">g<span></span></span><span></span></span><span><span style="font-size:70.7%;font-family:MathJax_Main;" id="MathJax-Span-218" class="mo">′</span><span></span></span></span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-219" class="mo">(</span><span style="font-family:MathJax_Math;font-style:italic;" id="MathJax-Span-220" class="mi">f<span></span></span><span style="font-family:MathJax_Main;" id="MathJax-Span-221" class="mo">)</span><span style="font-family:MathJax_Main;" id="MathJax-Span-222" class="mo">,</span><span id="MathJax-Span-223" class="texatom"><span id="MathJax-Span-224" class="mrow"><span id="MathJax-Span-225" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">保</span></span></span></span><span id="MathJax-Span-226" class="texatom"><span id="MathJax-Span-227" class="mrow"><span id="MathJax-Span-228" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">留</span></span></span></span><span id="MathJax-Span-229" class="texatom"><span id="MathJax-Span-230" class="mrow"><span style="font-family:MathJax_Main;font-weight:bold;" id="MathJax-Span-231" class="mn">4</span></span></span><span id="MathJax-Span-232" class="texatom"><span id="MathJax-Span-233" class="mrow"><span id="MathJax-Span-234" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">位</span></span></span></span><span id="MathJax-Span-235" class="texatom"><span id="MathJax-Span-236" class="mrow"><span id="MathJax-Span-237" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">小</span></span></span></span><span id="MathJax-Span-238" class="texatom"><span id="MathJax-Span-239" class="mrow"><span id="MathJax-Span-240" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">数</span></span></span></span><span id="MathJax-Span-241" class="texatom"><span id="MathJax-Span-242" class="mrow"><span id="MathJax-Span-243" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">；</span></span></span></span><span id="MathJax-Span-244" class="texatom"><span id="MathJax-Span-245" class="mrow"><span id="MathJax-Span-246" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">否</span></span></span></span><span id="MathJax-Span-247" class="texatom"><span id="MathJax-Span-248" class="mrow"><span id="MathJax-Span-249" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">则</span></span></span></span><span id="MathJax-Span-250" class="texatom"><span id="MathJax-Span-251" class="mrow"><span id="MathJax-Span-252" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">输</span></span></span></span><span id="MathJax-Span-253" class="texatom"><span id="MathJax-Span-254" class="mrow"><span id="MathJax-Span-255" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">出</span></span></span></span><span id="MathJax-Span-256" class="texatom"><span id="MathJax-Span-257" class="mrow"><span style="font-family:MathJax_Typewriter;" id="MathJax-Span-258" class="mo">"</span></span></span><span id="MathJax-Span-259" class="texatom"><span id="MathJax-Span-260" class="mrow"><span style="font-family:MathJax_Main;font-weight:bold;" id="MathJax-Span-261" class="mi">n</span><span style="font-family:MathJax_Main;font-weight:bold;" id="MathJax-Span-262" class="mi">o</span></span></span><span id="MathJax-Span-263" class="texatom"><span id="MathJax-Span-264" class="mrow"><span style="font-family:MathJax_Typewriter;" id="MathJax-Span-265" class="mo">"</span></span></span><span id="MathJax-Span-266" class="texatom"><span id="MathJax-Span-267" class="mrow"><span id="MathJax-Span-268" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">，</span></span></span></span><span id="MathJax-Span-269" class="texatom"><span id="MathJax-Span-270" class="mrow"><span id="MathJax-Span-271" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">不</span></span></span></span><span id="MathJax-Span-272" class="texatom"><span id="MathJax-Span-273" class="mrow"><span id="MathJax-Span-274" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">要</span></span></span></span><span id="MathJax-Span-275" class="texatom"><span id="MathJax-Span-276" class="mrow"><span id="MathJax-Span-277" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">输</span></span></span></span><span id="MathJax-Span-278" class="texatom"><span id="MathJax-Span-279" class="mrow"><span id="MathJax-Span-280" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">出</span></span></span></span><span id="MathJax-Span-281" class="texatom"><span id="MathJax-Span-282" class="mrow"><span id="MathJax-Span-283" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">引</span></span></span></span><span id="MathJax-Span-284" class="texatom"><span id="MathJax-Span-285" class="mrow"><span id="MathJax-Span-286" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">号</span></span></span></span><span id="MathJax-Span-287" class="texatom"><span id="MathJax-Span-288" class="mrow"><span id="MathJax-Span-289" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">和</span></span></span></span><span id="MathJax-Span-290" class="texatom"><span id="MathJax-Span-291" class="mrow"><span id="MathJax-Span-292" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">多</span></span></span></span><span id="MathJax-Span-293" class="texatom"><span id="MathJax-Span-294" class="mrow"><span id="MathJax-Span-295" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">余</span></span></span></span><span id="MathJax-Span-296" class="texatom"><span id="MathJax-Span-297" class="mrow"><span id="MathJax-Span-298" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">空</span></span></span></span><span id="MathJax-Span-299" class="texatom"><span id="MathJax-Span-300" class="mrow"><span id="MathJax-Span-301" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">格</span></span></span></span><span id="MathJax-Span-302" class="texatom"><span id="MathJax-Span-303" class="mrow"><span id="MathJax-Span-304" class="mo"><span style="font-family:STIXGeneral,&quot;font-size:77%;font-style:normal;font-weight:normal;">。</span></span></span></span></span><span></span></span></span><span style="vertical-align:-0.388em;"></span></span></span>