Nilai limx→0 sec5x−sec7xsec5x−sec3x=....\lim\limits_{x\rightarrow0}\ \frac{\sec5x-\sec7x}{\sec5x-\sec3x}=....x→0lim sec5x−sec3xsec5x−sec7x=....
32\frac{3}{2}23
−2-2−2
42\frac{4}{2}24
−3-3−3
23\frac{2}{3}32