1)

A function  f:R{0}R is defined as  

f(x)={x2+3x7,x>0h(x),x<0

 If f(x)  is an odd function, then h(x)=


A) x2+3x+7

B) x2+3x7

C) x2+3x+7

D) x23x+7

Answer:

Option C

Explanation:

f(x)={x2+3x7,x>0h(x),x<0

 f(x)  is odd function, then h(x)=?

 forr odd function

 h(x)=h(x)h(x)=(x)23x7

  h(x)=x23x7

  h(x)=[x23x7]   x2+3x+7