$3.77\cdot0.5$

$\int\frac{\left(x+1\right)}{x^2\left(x+3\right)}dx$

$\frac{d}{dx}\left(\left(sinx\right)^{4x^2+3x-1}\right)$

$\frac{\sin x\left(1+\sin x\right)+\cos x\cos x}{\cos x\left(1+\sin x\right)}\sec x$

$5\cos^2b=4$

$-632+204$