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differentaiting trig with quotient rule watch
- Thread Starter
Last edited by picer; 13-02-2010 at 14:39.
- 13-02-2010 14:28
- 13-02-2010 14:36
this is wrong in a few places The most obvious way is the (tan(x))^2 - (sec(3x))^2, you do realise how that is wrong, right?
I would advise doing this again systematically and carefully
let u = tan(3x) +cos(2x)
v = ... etc
finding u' and v'
and then use the quotient rule.
- 13-02-2010 14:37
- 13-02-2010 14:38
- Study Helper
- 13-02-2010 14:41
If you are only differentiating to find the gradient at x=0, there is no requirement to "tidy up" the derivative. Once you have it in the raw form, just substitute straight away.