\[\int_{{}}^{{}}{{{\sec }^{4}}x\tan x\ dx=}\] [AI CBSE 1980, 81; SCRA 1996]

\[\frac{1}{4}{{\sec }^{4}}x+c\]

\[\int_{{}}^{{}}{{{\sec }^{4}}x\tan x\ dx=}\] [AI CBSE 1980, 81; SCRA

1.	\[\int_{{}}^{{}}{{{\sec }^{4}}x\tan x\ dx=}\] [AI CBSE 1980, 81; SCRA 1996]
A.	\[\frac{1}{4}{{\sec }^{4}}x+c\]
B.	\[4{{\sec }^{4}}x+c\]
C.	\[\frac{{{\sec }^{3}}x}{3}+c\]
D.	\[3{{\sec }^{3}}x+c\]
Answer» B. \[4{{\sec }^{4}}x+c\]

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\[\int_{{}}^{{}}{{{\sec }^{4}}x\tan x\ dx=}\] [AI CBSE 1980, 81; SCRA 1996]

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