2sin2xcos2x=1−cos4x42sin^2xcos^2x=\frac{1-cos4x}{4}2sin2xcos2x=41−cos4x
∫−24x5dx\int-24x^5dx∫−24x5dx
limy→∞−a2ye(−y22a2)\lim_{y\to\infty}-a^2ye^{\left(-\frac{y^2}{2a^2}\right)}y→∞lim−a2ye(−2a2y2)
n2−11n+30n^2-11n+30n2−11n+30
(7x+9)(7x−15)\left(7x+9\right)\left(7x-15\right)(7x+9)(7x−15)
+5+9+9−7−4−2+8+6+10−2−1+7+5+9+9-7-4-2+8+6+10-2-1+7+5+9+9−7−4−2+8+6+10−2−1+7
∫(acoty)dy\int\left(a\cot y\right)dy∫(acoty)dy
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