tanx secx sinx=tan2x\tan x\:\sec x\:\sin x=\tan^2xtanxsecxsinx=tan2x
u2−14u+49u^2-14u+49u2−14u+49
−2(8−1)-2\left(8-1\right)−2(8−1)
∫arctan(2x)xdx\int\frac{arctan\left(2x\right)}{x}dx∫xarctan(2x)dx
6x−12−14x2−7x+86x-12-\frac{1}{4}x^2-7x+86x−12−41x2−7x+8
3g+5g3g+5g3g+5g
x3+13x2+46x+48x^3+13x^2+46x+48x3+13x2+46x+48
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