Consider the function z= = f(x, y) = sin(x - y). (a) Plot the cross-section where the graph of z = sin(x - y) intersects the zz-plane. (b) Plot the cross-section where the graph of z = sin(x - y) intersects the yz-plane. c) When x = 0 and y = 0, we can calculate that z = sin(0 - 0) = 0. Find the line through the origin in the xy-plane on which z is constant 0.

Q: (4) Find the equation of the tangent line of y = /1+4 sin x at the point %3D (0,1).

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