You're welcome. if a question like that comes up again, the main thing will probably spotting the right x value but it shouldn't take too much work. Luckily I sat C4 last year, but good luck to you too
When writing the integral with ln is it essential to use the modulus sign around the x within the ln?
I don't think it's essential to put in working for every question. But, there are certain questions where you may get a negative value inside the ln(x), so then you'd need to use the modulus signs to indicate your working. Otherwise, I think it's fine. I've never been marked down for excluding them.
I don't think it's essential to put in working for every question. But, there are certain questions where you may get a negative value inside the ln(x), so then you'd need to use the modulus signs to indicate your working. Otherwise, I think it's fine. I've never been marked down for excluding them.
okay thankyou! i just automatically do normal brackets so i just want to check i wouldnt loose marks
Hi quick Q The dy/dx of -2xy I understand the product rule is applied. But I don't take minus out or do I ? Ie -(2x dy/dx +2y) which would mean both become negative OR -2x dy/dx + 4y which leaves just x negative
Hi quick Q The dy/dx of -2xy I understand the product rule is applied. But I don't take minus out or do I ? Ie -(2x dy/dx +2y) which would mean both become negative OR -2x dy/dx + 4y which leaves just x negative
Thanks
take the minus out i would say then use the bracket so theres no confusion of signs
TeeEm can you link me to some of your questions involving volumes of revolution questions where you have a line and a curve and you use the formula of a cone. I don't know if I am making any sense thanks
My stomach is so quaky at the thought of this exam, it makes C3 look like a puppy. I think I have full UMS in C3 and if this one costs me the A* after that I will rip my hair out