3cos2x−13cos^2x-13cos2x−1
cos44x−sin44x=cos8xcos^44x-sin^44x=cos8xcos44x−sin44x=cos8x
ln3x =2\ln\frac{3}{x}\:=2lnx3=2
(10x3+y4)3\left(10x^3+y^4\right)^3(10x3+y4)3
∫2x(x+5)2dx\int\frac{2x}{\left(x+5\right)^2}dx∫(x+5)22xdx
76+76+45+4576+76+45+4576+76+45+45
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