iloczyn skalarny andzia: Znaleźć iloczyn skalarny <grad f1(0, 2π), grad f2(2π, 0)>, jeżeli f1(x, y) = e^x sin y a f2(x,y) = e^y sin x

int: df1dx=exsin(y) df1dy=excos(y) grad f1=[exsin(y),excos(y)] df2dx=eycos(x) df2dy=ey sin(x) grad f2=[eycos(x),eysin(x)] grad f1 * grad f2= exsin(y)*eycos(x)+excos(y)*eysin(x)= =ex+ysin(y)cos(x)+ex+ycos(y)sin(x)=ex+y(sin(x)cos(y)+sin(y)cos(x))= =ex+ysin(x+y)

andzia: dziękuje serdecznie !