<p dir="ltr"><img src="https://d2vlcm61l7u1fs.cloudfront.net/media%2F175%2F17546c3f-3fb0-4c91-9944-11573a225e01%2Fimage" alt="set4: Problem5 (1 point) Consider the function f(z, y)-(ez-3z) cos(y). Suppose s is the surface z f(z, y). al Find a vector which is perpendicular to the