The value of f (x) is -1 at the point P on a continuous curve y = f(x). What is the angle which the tangent to the curve at P makes with the positive direction of x axis?

The value of f (x) is -1 at the point P on a continuous curve y = f(x)

1.	The value of f (x) is -1 at the point P on a continuous curve y = f(x). What is the angle which the tangent to the curve at P makes with the positive direction of x axis?
A.	/2
B.	/4
C.	3 /4
D.	3 /2
Answer» D. 3 /2

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The value of f (x) is -1 at the point P on a continuous curve y = f(x). What is the angle which the tangent to the curve at P makes with the positive direction of x axis?

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