Since you have done these problems - show us your work - we can help you fix your mistakes (if there are any).Pls help me solve these exercises step by step.
I have missed the first sem and now i have cleared up basics and dont have enough time so if some can solve i can understand myself.Also i have done them but not sure if they are correct.
Thanks
For part (b) set the numerator equal to zero.ok i am 27 and studing Automation Engg..
In first question...part (a) I put values of x and solved it.aNS::::1/5^1/2
b)Shall i just take the partial derivative of f(x1,x2) with respect to x1 or i dont get this one.
c) its the same as b.
b) Read the problem statement - carefully. It has nothing to do with f'.for b) why are we putting numerator=0 .....i have taken the derivative of the equation wrt x1 but i dont know how shall i satisfy that f(x1,x2)=0.......if i put f'(x1)=0 still it does not satisfy....
c)i get 4x1x2+3x22
\(\displaystyle \dfrac{\partial f}{\partial L} = \left( \dfrac{1}{2\pi}\right) \left( \dfrac{-1}{2}\right) \left( \dfrac{1}{L^{3/2}C^{1/2}}\right) \)Q.3....df/dl=2Pi(-1/2.L-3/2.C1/2)
we get -1/PiL3/2C1/2......now we put value of L and C to get the answer .( any mistake in it pls point)
3b)If L is increased by 2% how would i change the equation???
We ALWAYS need to see your work to see what you have tried and where you are stuck.ok i have done all the critical points problems but i am stuck at this.Tomorow is my exam so i am really looking for quick help understand it.
f(x1,x2)=x14+4x12x22 - 2x12+2x22 -1
so fx=4x13+8x1x22 -4x1
and fx2= 8x12x2+4x2
now i am having difficulty to factorize the equation and find critical values.Pls help me do it so i can master it.
.ok so if we take fx2
4x2=0 and x22=1/2 .............How did you get that!
if i put the second value x2 into fx1 then i am not getting it further.
Please pay more attention to what you are saying. If 4x2=0, then it is necessarily true that x22=0 as well. ANY point with x2=0 will have 0 for the partial derivative sith respect to x2.ok so if we take fx2
4x2=0 and x22=1/2
if i put the second value x2 into fx1 then i am not getting it further.
By "it came from fx2," perhaps you are looking at how fx2 may be zero. Did you notice that you have set x12 negative? That is impossible! (not real). That is why I saidits x12=-1/2 it came from fx2
pls pardon my mistakes as they are mailnly typing.
now if we put value of x1 in equation 1 then after factoring i still dont get value of x2