derivative Find Dxy of y = sec^3(x)

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derivative Find Dxy of y = sec^3(x)
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I didn't think it's so easy...Thanks sir...I tried many times but I calculated only power ..So I failed...Thanks a lot sir..I am from india

ankanbiswas
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Thnaks u r great i promise i will increase your suscriber

Kaundinyabro
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This video gave absolutely no explanation! Extremely unhelpful

zoeymarton