Maths help please :)

Chots

Show that e^1 + e^-1 - 2 = ((e-1)^2)/e.

Thankss

Reply 1

Chlorophile

Original post by Chots

Show that e^1 + e^-1 - 2 = ((e-1)^2)/e.

Thankss

Have you managed to make any progress so far? I'll give you a hint - try to combine all those terms into one fraction.

Reply 2

bigshiv2

WP_20141120_002.jpg189.9KB

Reply 3

bigshiv2

Original post by Chlorophile

Have you managed to make any progress so far? I'll give you a hint - try to combine all those terms into one fraction.

Ah, my bad.

Reply 4

Chlorophile

Original post by bigshiv2

Ah, my bad.

Your second line is one step away from the answer! What does e^2-2e+1 look like?

Reply 5

Chots

thank you soo muchhh :smile:

so simple haha

Reply 6

bigshiv2

Original post by Chlorophile

Your second line is one step away from the answer! What does e^2-2e+1 look like?

I meant my bad as in I should have prompted them in the right direction instead of just doing it for them, I think my solution is correct?

Reply 7

Chots

Original post by bigshiv2

I meant my bad as in I should have prompted them in the right direction instead of just doing it for them, I think my solution is correct?

Nah lol thanks for just showing me, i never would have got there with promps. The original question was show that the integral of (e^x - e^-x) dx with limits of 1 and 0 = (e-1)^2/e. What i posted was as far as i could get it :smile:

Reply 8

bigshiv2

Original post by Chots

Fair enough, C3?

Reply 9

Chots

Original post by bigshiv2

Fair enough, C3?

Aha yeah ugh :/

Reply 10

bigshiv2

Original post by Chots

Aha yeah ugh :/

C3 is fine, most of it is integration and differentiation, it mostly provides a basis for C4. Oh and there is the functions chapter, I hated that almost as much as the coursework.

Reply 11

Chots

Original post by bigshiv2

C3 is fine, most of it is integration and differentiation, it mostly provides a basis for C4. Oh and there is the functions chapter, I hated that almost as much as the coursework.

Yeah guess so. Haha yeah hate functions too -_- coursework? what exam board did you do? What are you doing now?

Reply 12

bigshiv2

Original post by Chots

Yeah guess so. Haha yeah hate functions too -_- coursework? what exam board did you do? What are you doing now?

I did MEI, I took C3, C4 and m1 this year ( a year early). because I'm doing further maths so will sit the rest of my further maths exams next summer.