would carry forward error count for the curve sketching q. i got one inflection point and i found that x = 1. however, when proving, i think i substituted wrong and i messed up and said that it doesn't exist. i did find stationary point tho.
Dont worry about it, if u use an answer u got in part a and applied to correctly for part b and c to get another answer, even if a is wrong they use your working out to determine if u got the question
Dont worry about it, if u use an answer u got in part a and applied to correctly for part b and c to get another answer, even if a is wrong they use your working out to determine if u got the question
No, you're suppose to change cos into sin, although I sketched the graph too sadly. I just found out that you had to change cos into sin since they gave a phase shift of cos left 6 units, which is equivalent to sin x. Then we were suppose to solve for tan.