Question

find first and seconde derivative y(x) = (sec(x) + tan(x)) (sec(x) - tan(x))​

Answer 1

Answer:

$we \: \: know \: (a + b)(a - b) = a ^{2} - b ^{2} \\ \: also \: sec ^{2} x - tan {}^{2} x = 1$

Dy/dx= 0

$d {}^{2} y \div dx {}^{2} = 0$

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