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Evening all,
Just began revising my Higher maths.. the night before the prelim. Wasn't smart - i know.
Ive come across a slight problem.. i have no idea how to do this question.
Solve these equations, correct to 1 decimal place where necessary, for 0<=x>=360.
5cos2x - cosx + 2 = 0
I have absolutely no idea how i go about these type of questions. If you could help me with this one i'll hopefully be able to do others.
Thanks,
-Allan
cos2x = 2cos2x -1
-> 10cos2x -cosx-3 = 0
-> (5cosx-3)(2cosx+1) = 0
I'm sure you can take it from here.
Thanks. Got 1 of the questions in my exam and i aced it :)
-Allan
Oh god the higher maths. I assume your Scottish as well. thank god I am only doing int2.
I am aye. Its rubbish. Failed it (Y) :P for a second year running tbh.
-Allan
Come on? Higher isn't that bad? There is just a lot of memory work and problem solving? What I hate is that this year is the first year that we are doing multiple choice questions.... I despise them.