The function will

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

The function

f(x)=\frac{4}{x-1}-\frac{9}{x+1}

will (1) have absolute maximum value

-\frac{1}{2}

(2) have absolute minimum value

-\frac{25}{2}

(3) not lie between

-\frac{25}{2}

and

-\frac{1}{2}

(4) always be negative