You can use following common functions:sqrt- square root,exp- power of exponent,lb- logarithm to base 2,lg- logarithm to base 10,ln- logarithm to base e,sin- sine,cos- cosine,tg- tangent,ctg- cotangent,sec- secant,cosec- cosecant,arcsin- arcsine,arccos- arccosine,arctg- arctangent,arc...