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# C3 differentiation

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1. this is my answer for the differentiated form of secxcosecx but the simplied answer is just sec^2x-cosec^2x .

I don't see how can I turn secxcosecx(Tanx-Cotx) into that form . Thanks
2. (Original post by coconut64)
this is my answer for the differentiated form of secxcosecx but the simplied answer is just sec^2x-cosec^2x .

I don't see how can I turn secxcosecx(Tanx-Cotx) into that form . Thanks

So

and finish it off from there
3. (Original post by RDKGames)

So

and finish it off from there
How can you factor out COT x when there is only one COT x term ?
4. you can rewrite y = secx cosecx as

2/sin2x

then do a quotient rule...

y' = -4cos2x/sin22x

y' = -4(cos2x - sin2x)/(2sinxcox)2

etc
5. (Original post by coconut64)
How can you factor out COT x when there is only one COT x term ?
And how does that prevent you from doing so, exactly?

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