[" Let "f(x)=2x+1" .Then the number of real values of "x" for which "],[" the three unequal numbers "f(x),f(2x),f(4x)" are in GP is: "]

Let f(x)=2x+1. Then the number of real number of real values of x for which the three unequal numbers f(x),f(2x),f(4x) are in G.P. is 1 b. 2 c. 0 d. none of these

Let f(x)=2x+1. Then the number of real number of real values of x for which the three unequal numbers f(x),f(2x),f(4x) are in G.P. is 1 b. 2 c. 0 d. none of these

Let f(x)=2x+1. Then the number of real number of real values of x for which the three unequal numbers f(x),f(2x),f(4x) are in G.P. is 1 b. 2 c. 0 d. none of these

Let f(x) = x +(1)/(2) then the number of real values of x for which the three unequal terms f(x) ,f(2x) ,f(4x) are in H.P is -

Let f(x) = x + 1/2 , then the number of real values of x for which the three unequal terms f(x), f(2x), f(4x) are in H.P. is

Let f(x)=2x+1. Then the number of real number of real values of x for which the three unequal numbers f(x),f(2x),f(4x) are in G.P.is 1 b.2 c.0 d.none of these

If f(x) = x +1//2 Then. The number of real values of x for which the three unequal terms f(x) , f(2x) and f(4x) are in HP is

Let f(x)=sqrt(log_(10)x^(2)) then the set of all values of x for which f(x) is real is

Let f(x)=a^(x)-x ln a,a>1. Then the complete set of real values of x for which f'(x)>0 is

Let f(x)=x^(2)+kx;k is a real number.The set of values of k for which the equation f(x)=0 and f(f(x))=0 have same real solution set.