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 Calculus Calculators 1. Trigonometry 1. Simplifying trigonometric equations, proving identities, eg. (1) sin(30)*cos(60)+sin(30)*cos(60), (2) tan(x)+cot(x), (3) tan^2(x)-sin^2(x), (4) csc(x)/cos(x)-cos(x)/sin(x) 2.1 If sin(x)=5/13 then Find the value of all the other five trigonometric functions 2.2 If sin(x)=3/5 then solve expression cos(x)csc(x)+tan(x)sec(x) 2. Derivative 1. Find Derivative, eg. (1) d/(dx)(2x^(3)-2x^(2)-5x+4), (2) d/(dx)(log(x)e^(x)), (3) d/(dx)(3cos(sin(x))) 2. Find maximum and minimum value of y=x^3+6x^2-15x+7