Question
Q1. Let f be a twice differentiable function on R.Given that f''(x)>0 for all x element of R.Then which one is true and why?
a.f(x)=0 has exactly two solutions on R.
b.f(x) =0 has a positive solution if f(o)=0 and f'(0)=0
c.f(x)=0 has no positive solution if f(o)=0 and f'(o)>0.
4. f(x)=0 has no positive solution if f(0)=0 and f'(0)<0