Question

Find points at which the tangent to the curve
y=x^3-3x^2 - x + 7is parallel to the x-axis.

a.(3.-20) and (-1.12)
b.(3,20) and (1,12)
c.(3--10) and (1, 12)
d.None of these
Show working.​

Answer 1

Answer:

B. (3,20) And ( 1,12 )

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