(v^n)\'=nv^(n-1)
(ln v)\'=v\'/v
(e^v)\'=e^v*v\'
(sin v)\'=cos v*v\'
(cos v)\'=-sin v*v\'
(tan v)\'=(sec v)^2*v\'
(cot v)\'=-(csc v)^2*v\'
(sec v)\'=sec v*tan v*v\'
(csc v)\'=-csc v*cot v*v\'
(arcsin v)\'=v\'/(1-v^2)^(1/2)
(arccos v)\'=-v\'/(1-v^2)^(1/2)
(arctan v)\'=v\'/(1+v^2)
(arccot v)\'=-v\'/(1+v^2)
(arcsec v)\'=v\'/(v*(v^2-1)^(1/2))
(arccsc v)\'=-v\'/(v*(v^2-1)^(1/2))
