Finding the Slope of a Tangent Line using Derivatives | Step-by-Step Guide with Example

What is the slope of the line tangent to the curve y3−xy2+x3=5 at the point (1,2) ?

To find the slope of the line tangent to a curve at a specific point, we can use the concept of derivatives

To find the slope of the line tangent to a curve at a specific point, we can use the concept of derivatives.

First, let’s differentiate the given equation to find the derivative of y with respect to x.

Differentiating y^3 − xy^2 + x^3 = 5 with respect to x, we get:

3y^2 * (dy/dx) – y^2 + 3x^2 = 0

Now, we need to find the value of dy/dx at the point (1,2).

Substitute x = 1 and y = 2 into the equation:

3(2^2) * (dy/dx) – 2^2 + 3(1^2) = 0

12(dy/dx) – 4 + 3 = 0

12(dy/dx) = 1

dy/dx = 1/12

So, the slope of the line tangent to the curve y^3 − xy^2 + x^3 = 5 at the point (1,2) is 1/12.

More Answers: