x= 3.00000, cot(x)=-7.01525, acot(cot(x)) =  3.00000
x= 1.50000, csc(x)= 1.00251, acsc(csc(x)) =  1.50000
x= 0.50000, sec(x)= 1.13949, asec(sec(x)) =  0.50000
x= 0.75000, sin(x)= 0.68163, asin(sin(x)) =  0.75000
x= 0.25000, cos(x)= 0.24740, acos(cos(x)) =  0.25000
x=-2.50000, 2**x  = 0.17677, lg(2**x)     = -2.50000
x= 3.75000, 10**x = 5623.41, log(10**x)   =  3.75000
x= 3.25000, e**x  =   25.79, ln(e**x)     =  3.25000
x= 3.00000, y     = 3.00000, y**x         =  27.0000