Question

( f(x)=sec ^{2} x-tan ^{2} x ) isa constant funtion
( begin{aligned} f(x)=1 & text { At is periodic with period } 0 & text { t } end{aligned} )
begin{aligned} ( 1 & ) is ( )hline end{aligned}

# 5. Draw the graph of y = sec? x-tanx. Is f(x) periodic? If yes, what is its fundamental pe

Solution