1.

फलन sec x का x के साक्षेप अवकल गुणांक ज्ञात कीजिए ।

Answer» ` d/dx sec x = .d/(dx) 1/(cos x)`
` = ( cos xd/(dx) 1-1 . d/(dx) cos x)/(cosx)^(2) `
` ( cosx^(0) -(-sin x))/(( cos^(2) x)^(2))= ( sin x) /( cos^(2) x)`
` 1/cos .-tan x sec x `
इस प्रकार ` d/(dx) sec x = sec x. tan x. `


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