Mathematics · 2014
JEE Main · 9 April 2014, Shift 1 · Q74
If f(x)=(3/5)^x+(4/5)^x-1, x ∈ R, then the equation f(x)=0 has:
If $\displaystyle f(x)=\left(\frac{3}{5}\right)^x+\left(\frac{4}{5}\right)^x-1, x \in \mathbf{R}$, then the equation $\displaystyle f(x)=0$ has :
Official answer
(2)
one solution
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