Question

3. Seja a função exponencial f: R=>R, definida por f(x) = a^x.Se f e crescente, então:

(a) a = 1

(b) a > 1

(c) 0<a<1.

(d) a<0.

(e) a = 0​

Answer 1

$\boxed{\begin{array}{l}\sf Se~base~\acute e ~maior~que~1\longrightarrow func_{\!\!,}\tilde ao~crescente\\\sf se~a~base~est\acute a~entre~0~e~1\longrightarrow func_{\!\!,}\tilde ao~decrescente\\\sf resumindo:\\\sf f(x)=a^x\\\sf a>1\longrightarrow func_{\!\!,}\tilde ao~crescente\\ \huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~b}}}} \end{array}}$