# Need Help with Differentiate Function?

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- Engr. RonaldLv 76 days ago
Differentiate the function:

f(x) = 4/5(x^5 + x)

f(x) = 4/5x^5 + 4/5x

f'(x) = 4x^4 + 4/5 answer//

Differentiate the function:

f(t) = - 2/[7t^(-5)] + 6t^3

f(t) = -2/7t^5 + 6t^3

f'(t) = - 10/7t^4 + 18t^2 answer//

Source(s): https://www.wolframalpha.com/input/?i=derivative+o... https://www.wolframalpha.com/input/?i=derivative+o...- Login to reply the answers

- PhilipLv 67 days ago
f(x) = (4/5)(x^5 +x).

f'(x) = (4/5)(5x^4 +1).

f(t) = -2/7t^(-5) +6t^3 = (2/7)t^5 + 6t^3.

f'(t)=(2/7)(5t^4) +6(3t^2)= (10/7)t^4 +18t^2 = (1/7)t^2(10t^2 + 7*2*9) = (2/7)t^2(5t^2 + 63).

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