1.

Find value of c(a point in f(x) where slope of tangent to curve is zero) where
f(x) = ( begin{cases}Tan(x) & 0<x< /4 Cos(x) & /4<x< /2 end{cases} ), given c (0, /2)

A. <sup> </sup> <sub>4</sub>
B. Rolle s Theorem is not applied, because function is not continuous in interval [0, <sup> </sup> <sub>2</sub>]
C. Rolle s Theorem is not applied, because function is not differential in interval (0, <sup> </sup> <sub>2</sub>)
D. Function is both continuous and differentiable but Rolle s theorem is not applicable as f(0) f(<sup> </sup> <sub>2</sub>)
Answer» C. Rolle s Theorem is not applied, because function is not differential in interval (0, <sup> </sup> <sub>2</sub>)


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