Q$100.$ The height above my house can be described by the function

a$)$ use the meshc $()$ and for the contour $()$Functions in MatLab

to vizualise $H(x,y)$ for x$,$y

$b)$ you are given that when there is heavy rain, the sea will rise up to H$($x$,$y$)=15.$ use the contour$()$ funtion in MATLAB to plot this perimeter of the sea where H$($x$,$y$)=15$

c$)$ write the matlab program that yses the newton raphson method to plot the shape of the sea $($i$.$e H$($x$,$y$)=15)$ for x check your answers with b$.$