Find the derivative of (y=frac{x^7 – x^5}{x^4})
-
A.
x(x2-1) -
B.
3x(x2-1) -
C.
3x2-1 -
D.
7x6-5x4
Correct Answer: Option C
Explanation
(y=frac{x^7 – x^5}{x^4}\
y = frac{x^7}{x^4} div frac{x^5}{x^4}\
y = x^3 – x \
frac{dy}{dx} = 3x^2 – 1)
(y=frac{x^7 – x^5}{x^4}\
y = frac{x^7}{x^4} div frac{x^5}{x^4}\
y = x^3 – x \
frac{dy}{dx} = 3x^2 – 1)