sin(b)+cos2(b)sin(b)\sin\left(b\right)+\frac{\cos^2\left(b\right)}{\sin\left(b\right)}sin(b)+sin(b)cos2(b)
y=x3+92x2−6x+4y=x^3+\frac{9}{2x^2}-6x+4y=x3+2x29−6x+4
(xa+4b)2\left(x^a+4^b\right)^2(xa+4b)2
limx→∞(7x3x3−x2+x+7)\lim_{x\to\infty}\left(\frac{7x^3}{x^3-x^2+x+7}\right)x→∞lim(x3−x2+x+77x3)
1+x3y91+x^3y^91+x3y9
5(−2)3(2)−5(−8)(2)5\left(-2\right)^3\left(2\right)-5\left(-8\right)\left(2\right)5(−2)3(2)−5(−8)(2)
cos(x)−2sin(x)cos(x)−2sin2(x)+sin(x)\frac{cos\left(x\right)-2sin\left(x\right)cos\left(x\right)}{-2sin^2\left(x\right)+sin\left(x\right)}−2sin2(x)+sin(x)cos(x)−2sin(x)cos(x)
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