Does the parabola y = 2x^2 - 13x + 5 have a tangent whose slope is -1. If so, then it will be?

Does the parabola y = 2x^2 - 13x + 5 have a tangent whose slope is -1. If so, then it will be?

Answer: y= -x-13
Explanation

To find the slope of the tangent to the parabola y = 2x^2 - 13x + 5, we need to find the derivative of y with respect to x.

dy/dx = 4x - 13

We want to find if there is a point where the slope of the tangent is -1.

4x - 13 = -1

4x = 12

x = 3

Now, we need to find the corresponding y-coordinate.

y = 2(3)^2 - 13(3) + 5

y = 18 - 39 + 5

y = -16

So, the point of tangency is (3, -16).

The equation of the tangent line is:

y - (-16) = -1(x - 3)

y + 16 = -x + 3

y = -x - 13

This question appeared in Past Papers (4 times)
Lecturer Mathematics Past Papers and Syllabus (1 times)
SPSC 25 Years Past Papers Subject Wise (Solved) (2 times)
This question appeared in Subjects (1 times)
MATHS MCQS (1 times)

Install this app on your device for quick access right from your home screen.