Differentiable supposef:rr isa function. then which the following statements are necessarilly frue? is (a.) if flx)sr<1 for alfer, then f has at least one fixed

differentiable Supposef:RR isa function. Then which the following statements are necessarilly frue? is (a.) If flx)sr<1 for alfeR, then f has at least one fixed point. * (b.) If f has a unique fixed point, then then S(x)sr<1 for all xeR-. (c.) If f has a unique fixed point, then f(x)2r>-i for all xeR (d.) None of these