Write the function f(x,y) = xcosh(x)cos(y) - ysinh(x)sin(y) + i(xsinh(x)sin(y) + ycosh(x)sin(y)) in terms of z

for the given function f(x,y) = sin(3-x-3y+xy)a) whats the range and domain for f(x,y) b) factor the sin function and does this form show ideas as to what the appearance of z=f(x,y) is

Help me please

Use implicit differentiation to find y cos O A. O C. () sin = 5x + 5y 5y² () -5y² 5-y sin COS (G) y - -5 dy dx 0 24.4-24 O B. O D. sin () sin (7) 5 + y cos 5y + y cos () - 5 - 5y

(b) Find 82 f дудх for f (x,y) = exy + x sin (y) .

Let f′′(θ)=sin(θ)+cos(θ) and suppose that f(0)=6 and f′(0)=10.  What is the sum of the coefficients on all 4 terms in f(θ)?