e(-x)•(-y) what is the mathematical representation of the formula z=y Va2+b2 Z= y.*exp(x)*(-y)/sqrt(a^2+b*2) O z=y. *exp(-x)*(-y)/sqrt(a^2+b^2) O z-y.*exp(-x)*(-y)/sqrt(a^2)+sqrt(b^2) Z=y. *exp(-x)....

Extracted text: e(-x)•(-y) what is the mathematical representation of the formula z=y Va2+b2 Z= y.*exp(x)*(-y)/sqrt(a^2+b*2) O z=y. *exp(-x)*(-y)/sqrt(a^2+b^2) O z-y.*exp(-x)*(-y)/sqrt(a^2)+sqrt(b^2) Z=y. *exp(-x). *(-b)/sqrt(a.^2+b.^2) To show the legend of three functions we can use? * Legend('sin(x)";sin(2x)";sin(0.5x);FontSize',16) Legend(['sin(x)",sin(2x)",sin(0.5x)",FontSize', 16) O Legend({'sin(x)""sin(2x),sin(0.5x)'},"FontSize',16) None of the above. the command that change the image to gray scale is? * rbg2 gray O rgb2 gray rjb2 gray none of the above