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प्रश्न
Write a value of\[\int\text{ tan x }\sec^3 x\ dx\]
उत्तर
Let I=\[\int\]tan x . sec3x dx
Let sec x = t
⇒ sec x tan x dx = dt
\[ = \frac{\sec^3 x}{3} + C \left( \because x = \sec x \right)\]
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