- #1
vnaut
- 2
- 0
Hi Physics Forum,
I've just started taking Diff EQ and have been using my calculator for most integrations. I've come across two problems that I hope have answers.
1) When I try the integral of (x+1) (the quantity! not just x+1), my calculator still spits out (x^2/2)+x while the real answer should be (-(x+1)^2)/2. Is there a way to make my calculator identify (x+1) as the quantity (or is it factor? I forgot the actual term) rather than just x+1?
2) When I integrate 3/(100+2*x) I'm getting 3/2 * ln(x+50). However, I'm 99% sure the answer should be 3/2 * ln(100+2x). What am I/the calculator doing wrong?
Any and all answers are appreciated, thanks so much!
I've just started taking Diff EQ and have been using my calculator for most integrations. I've come across two problems that I hope have answers.
1) When I try the integral of (x+1) (the quantity! not just x+1), my calculator still spits out (x^2/2)+x while the real answer should be (-(x+1)^2)/2. Is there a way to make my calculator identify (x+1) as the quantity (or is it factor? I forgot the actual term) rather than just x+1?
2) When I integrate 3/(100+2*x) I'm getting 3/2 * ln(x+50). However, I'm 99% sure the answer should be 3/2 * ln(100+2x). What am I/the calculator doing wrong?
Any and all answers are appreciated, thanks so much!