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Urgent Help Needed In Mathematics - Education - Nairaland

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Urgent Help Needed In Mathematics by GMacbeth: 6:59pm On Jun 02, 2019
Please guys I need your help here mathematics gurus

Re: Urgent Help Needed In Mathematics by PrinceCEE(m): 10:44pm On Jun 02, 2019
No 1: y = tan2x

y' = 2sec²2x

But from trigonometry, sec²x = 1 + tan²x
Hence sec²2x = 1 + tan²2x

==> y' = 2(1 + tan²2x)
y' = 2(1 + y²)

Follow same step for no2
Re: Urgent Help Needed In Mathematics by projecttopics2: 6:52am On Jun 03, 2019
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Re: Urgent Help Needed In Mathematics by GMacbeth: 9:07am On Jun 03, 2019
PrinceCEE:
No 1: y = tan2x

y' = 2sec²2x

But from trigonometry, sec²x = 1 + tan²x
Hence sec²2x = 1 + tan²2x

==> y' = 2(1 + tan²2x)
y' = 2(1 + y²)

Follow same step for no2
Thanks

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