By Lagrange’s mean value theorem which of the following statement is true:a) If a curve has a tangent at each of its points then there exists at least one-point C on this curve, the tangent at which is parallel to chord ABb) If f’(x) = 0 in the interval then f(x) has same value for every value of x in (a, b)

By Lagrange’s mean value theorem which of the following statement is

1.	By Lagrange’s mean value theorem which of the following statement is true:a) If a curve has a tangent at each of its points then there exists at least one-point C on this curve, the tangent at which is parallel to chord ABb) If f’(x) = 0 in the interval then f(x) has same value for every value of x in (a, b)
A.	(a) alone is true
B.	(b) alone is true
C.	Both (a) and (b) are true
D.	Neither (a) nor (b) is true
Answer» B. (b) alone is true

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