Q.

If the normal to the curve y=⨍ (x) at the point (3,4) makes an angle 3π4 with the positive x-axis, then ⨍ '(3) is equal to

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

1

b

-1

c

45

d

-34

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

detailed_solution_thumbnail

Slope of the tanget to y=⨍ (x) at (3,4) is dydx=⨍ '(x)(3,4)

Therefore slope of the normal =-1⨍ '(x)(3,4)

                                                       =-1⨍ '(3)

                                                     -1f'3=tan3π4 Given

            ⨍ '(3)=1   

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
If the normal to the curve y=⨍ (x) at the point (3,4) makes an angle 3π4 with the positive x-axis, then ⨍ '(3) is equal to