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anonymous
 5 years ago
find mean value?
2cos2x+sinx=0
a= pi\2, b=pi\2
anonymous
 5 years ago
find mean value? 2cos2x+sinx=0 a= pi\2, b=pi\2

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0plz reply karo plzzzzzzzzzz

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0{f(b)f(a)}/{ba}={f(pi/2)f(pi/2)}/{pi}={[2cos(pi)+sin(pi/2)][2cos(pi)+sin(pi/2)]}/{pi} ={2(1)+12(1)(1)}/pi=(2+1+2+1)/pi=2/pi but f'(x)=4sin(2x)+cosx f'(c)=4sin(2c)+cos(c) set f'(c)=2/pi and solve for c

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i got ! 4sin2c+(1\90)=cosc now how can be find value of c

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0plz reply fast myninaya............

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.00.04535615498 is what I got using a calculator so the problem says to use the mean value thm?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how can you find the value of c . give me the method?

dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.0\[Average = \frac{1}{ba}\int\limits_{a}^{b}2\cos 2x +\sin x dx\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0dumcow i don't understand this method . give me another method?

dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.0are you looking for the mean value of the function from a to b or does it say to use mean value theorem to find point that equals avg rate of change

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0but my teacher says that u can use mean value theorm

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0m(ba)=int(f(x),a..b) m is the mean value

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0cow has already said this though

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0do you know how to integrate?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay, By the mean value theorem. The mean value is [f(b)f(a)]/[ba]. \[f(b)=f(\pi/2)=2\cos \pi +\sin(\pi/2)=2+1=1\] \[f(a)=f({\pi \over 2})=2\cos (\pi)+\sin (\pi/2)=21=3\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Therefore, \[{f(b)f(a) \over ba}={1(3) \over {\pi \over 2}{\pi \over 2}}={2 \over \pi}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its right but how we can find the value of c?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0This value, we just found (2/pi) is equal to f'(c). You can use this relation to find c.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.04sin2c+cosc=pi\2 so how we can find C?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Solve the equation, you may get more than one value for c. Take only the value that is in the given interval (pi/2,pi/2).

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how can it solve the equa? i don't understand this equation to find the value for C

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0i would graph it and approximate the solution

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0you could also use newton's method

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You never solved quadratic equation?! Hmm I think myininaya got a point. It's difficult to solve it using identities. Probably graphing is a good method.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no body can solve this question?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oops myininaya has already solved the problem. Sorry I didn't see that.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you are give my proper metjhod to find the valuc of C?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0as myininaya, we can estimate the value by graphing.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0c will be around 1.66

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you said that C1.66 . how you can find tell me?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Wait. this value of c is out side our interval. The value of c, that's in the interval is around 0.045

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0look for x intercepts of f'(c)=2/pi

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[f'(c)={f(b)f(a) \over ba}\] this is the formula.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i know thic formula i completed.. 4sin2c+cosx=2\pi after what can i do i don't understand?

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0this is what I got when I used newton's method to find c

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0f(x)=2cos2x+sinx andf`(x)=4sin2x+cosx

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0oops i forgot about the 2/pi you try i have to go
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