Question

найдите производную функции
$f(x) = 5 {x}^{4} - 7 {x}^{3} - 2 sqrt{x}$

Answer 1

f`(x)=20x^3-21x^2-1/√x

Answer 2

$f(x)=5x^{4} -7x^{3} -2sqrt{x} \\f'(x)=5(x^{4} )'-7(x^{3})'-2(sqrt{x})'=20x^{3}-21x^{2}-2*frac{1}{2sqrt{x}} =20x^{3}-21x^{2} -frac{1}{sqrt{x}}$