Question: answer this Let z = sin (y - 9x). NOTE: Enter the exact answers. (a) Find the rate of change of z with respect to

answer this

Let z = sin (y - 9x). NOTE: Enter the exact answers. (a) Find the rate of change of z with respect to a at the point (4, 1) with y held fixed. -9 cos (35) (b) Find the rate of change of z with respect to y at the point(4, 1) with x held fixed. 8 cos(35)

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