. Use partial derivatives to locate critical points for a function of two variables. Find the values of x, y and z that correspond to the critical point of the function: z = f(x, y) = 42 + 2x - 7y+ 3y - 8xy Enter your answer as a decimal number, or a calculation (like 22/7). = (Round to 4 decimal places) (Round to 4 decimal places) 2= (Round to 4 decimal places)e Use partial derivatives to locate critical points for a function of two variables. Find the critical point of the function: flz,y) = 8 4z z + 2y 3y This critical point is a: Select an answer e Use partial derivatives to locate critical points for a function of two variables. Find the points on the cone 2 = z* + that are closest to the point (4, 1, 0). Please show your answers to at least 4 decimal places. S