Adrian Posted July 17, 2002 Share Posted July 17, 2002 and its EASY! im teaching myself from the book because the prof. sucks! i like this better than other types of math...i dont know why... ill probably be posting in here a lot throught the semester EDIT: by semester i mean 4 weeks...summer classes compress 16 weeks to 4 Link to comment Share on other sites More sharing options...
mike Posted July 17, 2002 Share Posted July 17, 2002 Ha, I just took a 3 week Calc class... 4 days a week, 4 hours a day... It was actually.....fun... I understood it, and was able to do what was presented to me... Link to comment Share on other sites More sharing options...
kenel Posted July 18, 2002 Share Posted July 18, 2002 I like calculators too, especially the ones with the games. Link to comment Share on other sites More sharing options...
PlanetCpp Posted July 19, 2002 Share Posted July 19, 2002 i cant imagine ANYONE likeing calc 2, i hated calc 1 but ill take it anyday over this ;o( maybe calc 2 wouldnt be so bad in a whole semster, im taking it in the summer. if your good with trig, and i mean really good then you might actually like calc 2, but you have to remember things like sin²x+cosx/tan2x+tan²x can be substituted by: 1=cosx-2sin²x(tanxsecx)-(sin^(-1)x) thats wrong (fake) or whatever but you get the drift 3 more classes to go calc 3, linear algebra, and probability oh god i cant wait!!! im gonna erase every bit of math knowledge from my brain once i walk out of the probability final:D Link to comment Share on other sites More sharing options...
mike Posted July 19, 2002 Share Posted July 19, 2002 eh i put all those 1=cosx-2sin²x(tanxsecx)-(sin^(-1)x) lines in my calculator ;P Link to comment Share on other sites More sharing options...
Epsilon Posted July 19, 2002 Share Posted July 19, 2002 haha, memorize your basic trig identities! i knew a guy who had tables of them in his ti-89, needless to say, his exams were easy heh but i think it helps to memorize your basic identites, like: tan(x) = sin(x)/cos(x) sin^2(x) + cos^2(x) = 1 sin(x) = cos(pi/2 - x) (same with any trig function and its cofunction) sin(a +- b), cos(a +-b) and some others i didn't list... and use what you know to derive something else, e.g. using sin(a +- b)/cos(a +-b) = tan(a +- b) to derive an identity for the sum/difference tangent formula... at least, this helped me out. if i knew d/dx sin(x) = cos(x), then i can find out d/dx cos(x) by using the fact that cos(x) = sin(pi/2 - x), therefore i find d/dx sin(pi/2 - x) which is cos(pi/2-x) * (-1), and since cos(pi/2-x) = sin(x), we have d/dx cos(x) = -sin(x) i can go on but you get the idea Link to comment Share on other sites More sharing options...
mike Posted July 19, 2002 Share Posted July 19, 2002 :puts everything in his calculator: Link to comment Share on other sites More sharing options...
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