Question

найдите производную функцию 
1.$y=x^{3} -2 x^{2} +x+2$
2.$y= sqrt{x} (2sinx+1)$
3.$y= frac{1} x^{2}$
4.$y= frac{1}{cosx}$
5.$y= frac{3 x^{2} -2}{ x^{3} }$
6.$y=tgx+ frac{1}{x}$

Answer 1

1 y=x³-2x²+x+2
y'=3x²-4x+1
3 y=1/x²
y'=(0*x²-2x)/x^4=-2/x³
4 y=1/cosx
y'=(0*cosx+sinx*1)/cos²x=sinx/cos³x
6 y=tgx+1/x
y'=1/cos²x-1/x²