If y = (5 - x)^{-3}, and \; dy/dx

Correct Answer is : 3(5 − x)4\; 3/(5\; -\; x)^4(5−x)43

Correct Answer is : 3(5 − x)4\; 3/(5\; -\; x)^4(5−x)43

Test Index

WAEC Further Mathematics 2019 Paper

Question : 31

Total: 39

If y = (5 - x)

^{-3}

\; \frac{dy}{dx}

Solution:

y = (5 - x) $^{-3}$

$\; \frac{dy}{dx}$ = -3(5 - x) $^{-4}$

= $\; \frac{-3}{(5\; -\; x)^4}$

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