tolong bantu saya. tugas turunan hanya nomor 2 dan 3 saya tidak mengerti

Penyelesaian:

2. [tex]f(x) = 3 \sqrt[5]{x^2} - \frac{2}{7 \sqrt{x^3} } [/tex]
= d 3x^2/5 - 2/7.x^-3/2
= 6/5.x^-3/5 + 6/7.x^-5/2
= [tex] \frac{6}{5 \sqrt[5]{x^3} } + \frac{6}{7x^2 \sqrt{x} } [/tex]

3. [tex]f(x) = (3x^2 - 2x) (1 - x^4)[/tex]

d f(x) = u' . v + v' . u

Misal: u = 3x² - 2x ; du = 6x - 2
v = 1 - x^4 ; dv = -4x³

[tex]d f(x) = (6x - 2) (1 - x^4) + (-4x^3) (3x^2 - 2x)[/tex]
= [tex](6x - 6x^5 - 2 + 2x^4) + (-12x^5 + 8x^4)[/tex]
= [tex]-18x^5 + 10x^4 + 6x - 2[/tex]