Question

If x, y and z are non zero numbers, what is the value of xz+zy? (1) (3x2y)2=0 (2) 3x=2y=4z

Answer 1

Answer:

-1/./2

Step-by-step explanation:

A function f: R2 → R maps a pair of values (x, y) to a single real number. ... then 3x+4y-z = 5 we recognize the equation of a plane. ... x and y are non-negative. ..... EXAMPLE 14.2.5 The function f(x, y)=3x2y/(x2 + y2) is not continuous at (0, 0), ..... -x(4 - x2 - y2)−1/2 and fy(x, y) = -y(4 - x2 - y2)−1/2, so fx(1, 1) = fy(1, 1) = -1/. /2.