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The slope of tangents to the curve y=9x^...

The slope of tangents to the curve `y=9x^(3)+7` at x=-1andx=1` are :

A

perpendicular

B

at an angle of `(pi)/(3)`

C

parallel

D

at an angle of `(pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
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