It doesn't work!. Because it is a "sector of a circle is inside a rectangle", and NOT a circle?
Possible derivation: d/dx(tan(2 pi x)) Rewrite the expression: tan(2 pi x) = (sin(2 pi x))/(cos(2 pi x)): = d/dx((sin(2 pi x))/(cos(2 pi x))) Use the quotient rule, d/dx(u/v) = (v ( du)/( dx)-u ( dv)/( dx))/v^2, where u = sin(2 pi x) and v = cos(2 pi x): = ((d/dx(sin(2 pi x))) cos(2 pi x)-(d/dx(cos(2 pi x))) sin(2 pi x))/(cos^2(2 pi x)) Using the chain rule, d/dx(sin(2 pi x)) = ( dsin(u))/( du) ( du)/( dx), where u = 2 pi x and ( d)/( du)(sin(u)) = cos(u): = (-((d/dx(cos(2 pi x))) sin(2 pi x))+(d/dx(2 pi x)) cos(2 pi x) cos(2 pi x))/(cos^2(2 pi x)) Simplify the expression: = ((d/dx(2 pi x)) cos^2(2 pi x)-(d/dx(cos(2 pi x))) sin(2 pi x))/(cos^2(2 pi x)) Factor out constants: = (-((d/dx(cos(2 pi x))) sin(2 pi x))+2 pi (d/dx(x)) cos^2(2 pi x))/(cos^2(2 pi x)) The derivative of x is 1: = (-((d/dx(cos(2 pi x))) sin(2 pi x))+1 2 pi cos^2(2 pi x))/(cos^2(2 pi x)) Using the chain rule, d/dx(cos(2 pi x)) = ( dcos(u))/( du) ( du)/( dx), where u = 2 pi x and ( d)/( du)(cos(u)) = -sin(u): = (2 pi cos^2(2 pi x)--(d/dx(2 pi x)) sin(2 pi x) sin(2 pi x))/(cos^2(2 pi x)) Simplify the expression: = (2 pi cos^2(2 pi x)+(d/dx(2 pi x)) sin^2(2 pi x))/(cos^2(2 pi x)) Factor out constants: = (2 pi cos^2(2 pi x)+2 pi (d/dx(x)) sin^2(2 pi x))/(cos^2(2 pi x)) The derivative of x is 1: = (2 pi cos^2(2 pi x)+1 2 pi sin^2(2 pi x))/(cos^2(2 pi x)) Use the Pythagorean identity: 2 pi cos^2(2 pi x)+2 pi sin^2(2 pi x) = (2 pi) (sin^2(2 pi x)+cos^2(2 pi x)) = (2 pi) (1) = 2 pi: = 2 pi/(cos^2(2 pi x)) Simplify the expression: Answer: | = 2 pi sec^2(2 pi x)
It's okay.. I'll try to earn my 1000 back. If i can.
A=πr^2 for a circle
A=wl For a rectangle,
Is this making any sense?
So you have all these formulas. You use these to plug in the information from above. Do you not have any notes on this stuff?
Ooh, that must hurt Hayley... I only lost thirty...
go add Mr Kubistek on khan academy add coaches and put code 8KCRGW help me finish him for being a prev thank you :)
No!. Show me the calculation that arrives at the answer of 185 cm^2, please.
Well, You know that the formula is for the area of a rectangle. So, When you do all those steps and such, it kind of makes sense on how that answer came to be.
Did i make any sense to you?
Cannot believe i lost a lot of points, LOL. It suprised me when i checked them
Triangular numbers: 1,3,6,10,15,21,28,37,47,58
Mine too, I lost 50 points, I don't even have as many points as you lost
This might help (:
https://www.mathsisfun.com/algebra/factoring.html
My heart's broken. haha.
Yep, same as me
So, He got rid of all my points that were on off- topic stuff?
Admin told me, you know don't get points for off-topic questions
93/100
which is 0.93..
What exactly is your question? lol
It would be 0.2 Grams, I think it's because you are dividing Grams by 100mg
0.2 grams
Possible derivation: d/dx(log(-x)) Using the chain rule, d/dx(log(-x)) = ( dlog(u))/( du) ( du)/( dx), where u = -x and ( d)/( du)(log(u)) = 1/u: = -(d/dx(-x))/x Factor out constants: = --d/dx(x)/x Simplify the expression: = (d/dx(x))/x The derivative of x is 1: Answer: | = 1/x
Hope that helped :D
The answer would just be 6 divided by 6 if at the begining of your question the is a 'by' after the 'divided'
6 divided 2 (1+2)=???
2 + 4
6=6
so..
6
:D
how do you write 29/50 as a percentage
29/50 X 100 =58%
??? Why is there no sign between 2 and the brackets?
