IMPLEMENTATION MathHOF

IMPORT Real COMPLETELY

DEF shiftX == \\f,x,deltaX. f(x-deltaX)

DEF mirrorY == \\f,x. 0-f(x)

DEF myCos == \\x. shiftX(sin,x,0-pi/2)

DEF myCot == \\x. myCos(x)/sin(x)