Bunuel wrote:
The expression \(\frac{x^{(-1)}}{5^x}\) is greatest for which of the following values of x?
A. 2
B. 1
C. 1/2
D. –1
E. –2
hi
lets think this way ..
to maximize any fraction, we need to maximize the numerator
and we know, any proper fraction with negative exponent will have the greatest value
here, in this question "x" is raised to a negative exponent, so lets substitute the "x" with a proper fraction
only C fits
no math here, guys
cheers through the kudos button if
...