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MATHEMATICS

JAMB 2005 - Question 36

Mathematics 2005 JAMB Past Questions - Question 36: If y = (1 - 2x)^3, find the value of dy/dx at x = -1

If y = (1 - 2x)^3, find the value of dy/dx at x = -1

A: 57

B: 27

C: -6

D: -54

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Correct Answer

Explanation

To find the value of y when x = -1 in the equation y = (1-2x)³, we substitute x = -1 into the equation and evaluate:y = (1 - 2(-1))³ = (1 + 2)³ = 3³ = 27Therefore, when x = -1, the value of y is 27.