Hi
where
The derivative of is
Therefore you have to find the derivative of
The derivative of is
Can you go on now ?
Can someone give me some guidance please, just started new calculas assignment and need some help:
If f(theta) = 10Sin^2(0.4theta - 0.1)
Show that f'(theta) = 4Sin(0.8theta - 0.2)
and evaluate f''(pie/4) to 3 decimal places?
For first part do I first change sin to cos and then remove the brackets which would give me 4Cos^2 but not much help with the rest?
I should get further than this but just need some help getting started.
Any help much appreciated.
I am sorry if I lost you ...
You are right : you need to differentiate f with respect to in order to find
I used u, f and g to help but it seems that I missed the objective !
BTW I should have used g and h since f is already taken
where and
u, g and h are intermediate functions aimed at using the usual formulas, that's all
The differentiation of is
Therefore the differentiation of is
Using trig identity
The differentiation of is
Now you just need to multiply this result by 10 to get the derivative of f
I hope this makes sense