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Limits and Derivatives — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsLimits and Derivatives3 Marks
Question
Find the derivative of function $2 \tan x - 7 \sec x$
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Answer

Here $f(x) = 2 \tan x - 7 \sec x$
$\therefore {\text{f}}(x) = \frac{d}{{dx}}[2\tan x - 7\sec x]$
$= 2\frac{d}{{dx}}(\tan x) - 7\frac{d}{{dx}}(\sec x)$
$= 2 \sec^2x - 7 \sec x \tan x$

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