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

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

(a) -1

(b) -3/4

(c) 4/3

(d) 1

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1 Answer

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Best answer

Correct option (d) 1

Explanation :

Slope of tangent

Therefore, slope of normal

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