Question Detail

MTH 102 Practice Questions MTH 102 Objective Question

Question

Find dy/dx at (1,1) of the implicit function x²+x+y³=0
Options
A -1
Correct Answer
B 1
C 0
D 2
Correct Answer

Option A is the correct answer.

Detailed Explanation

Differentiating: 2x+1+3y²y'=0, so y'=-(2x+1)/(3y²). At (1,1): y'=-(3)/(3)=-1.

Hint

Differentiate implicitly and solve for y', then plug in the given point.

Question Info