Question

Найти производную функцию f(x)
1.f(x)= tgx-4ctgx
2.f(x)=6cosx-1,2x
3.f(x)=x^2+2cosx
4.f(x)=2ctg3x+0,5x^4

Answer 1

$1) frac{1}{cos^2x}+ frac{4}{sin^2x} \ 2)-6sinx-1,2\ 3)2x-2sinx\ 4)- frac{6}{sin^2(3x)}+2x^3$

Answer 2

1.  1/cos^2- 4(-1/sin^2)= 1/cos^2 + 4/sin^2
2. 6* ( -sinx) - 1,2x = -6sinx -1,2x
3. 2x-2sinx
4. 28(-1/sin^2)*3 + 0,5*4x^3= -6/sin^2x+5,4x^3