thanks tonio and skeeter for helping me with the other problem. heres more problems i need help with T.T Find derivative of: y = cos^-1(x+y) y = tan^-1(x+y) Find Integrals of: (sec(x)^4)/(sqrt(tanx)) dx
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Originally Posted by bwong890 thanks tonio and skeeter for helping me with the other problem. heres more problems i need help with T.T Find derivative of: y = cos^-1(x+y) y = tan^-1(x+y) [snip] Re-write as x = cos(y) - y and x = tan(y) - y and find dx/dy in the usual way. Then dy/dx = 1/(dx/dy). Originally Posted by bwong890 [snip] Find Integrals of: (sec(x)^4)/(sqrt(tanx)) dx Substitute and then make the substitution . If you need more help, please show all your work and say where you get stuck.
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