Recent content by irunshow

^^ Thanks

This is the link for the assignment: http://imageshack.us/f/840/assignmentsynthesisofev.jpg/ Homework Statement Given in the link Homework Equations Why would the proposed synthesis be successful if the reaction stopped after 2 hrs? How does H attack compound 2 to create compound...

edit: kk i won't next time xD

Hi i got the answer to be 0.0317. Is that correct? Thanks =)

Hey dick, thanks but i think my teachers wants to do it with this formula: abs(Rn(x)) less than or equal to (M)/(n+1)! abs(x-a)^(n+1) I don't know what the M equals to tho

Thanks Dick, Yea my teacher didnt explain it in class cause there was no time left. Is there a general formula to calculate the max error? Thanks

solved thanks

Thanks char. I got the radius of convergence to = lim n-> ∞ of abs( (x-2)(n+2) / (n+1) ) < 2lim n-> ∞ of (n+2)/(n+1) = 1 so R= 2 I = (-2/2) Just as a general rule, does the derivative of a series have the same R and I if a is the same?Thanks everyone for the help

Thanks guys =) But how does the sum of the derivates work? do I do d/dx (-1)^n + d/dx (x-2)^n divided by d/dx (2^(n+1))? and add them together? Don't I get something like n (-1)^(n-1) for the first term? how does that change into the correct represataion?

Guys I got the representation to = (-1)^n+1 (x-2)^n (1/2^(n+2)) (n+1) Is this correct? But I didnt use the sum of the derviates rule. I just added n+1 to first representation and multiplied it by n+1 as well

Ic okay thanks Sethric. Can I take the dervative of the representations of the series for 1/x to find out what the represenation of the series fo -1/x^2 is?

I got the first 4 quotients to be: (-1/4) , (1/4), -(6/32), (24/192), -(120/1536) I noticed the denominators all divisible by 4. Also can anyone solve this pattern 1,2,6,24,120?

I see. Thanks but I don't really understand char's limit idea. Can someone explain please? it is -1/x^2 btw

Ic okay thanks Char.limit I will try to work it out and post the answer on there Edit: so if f(x) = -1/x^2 Then the series representation will have (f(x))' somewhere in it?

Thanks sethric, I did f(x) = -1/x^2 and i got: (-1/4) + (1/4)(x-2) - (3/16)(x-2)^2 + (1/8)(x-2)^3 +...+ But I can't seem to find the nth pattern. Is there a formula I can plug into find it?