Which one of the following does not hold good for S.H.E?

Which of the following does not holds for y=e^(x)

Which one of the following statements does not hold good for the function f(x)=cos^(-1)(2x^(2)-1)?

Which one of the following inequality holds good:

If in a triangle ABCp.q.r are the altitudes from the vertices A,B,C to the opposite sides,then which of the following does not hold good?

A function is defined as f(x)=lim_(x rarr oo)[cos^(2n)x, if x 1 which of the following does not hold good?

A function is defined as f(x)=lim_(x->oo)[cos^(2n) x , if x 1 which of the following does not hold good?