Which of the provided answers solves this system of equations?
2y – 3x = 3y +x
y2 + x2 = 68
If a random variable X has a normal distribution with mean zero and variance 4, approximately what proportion of realizations of X should lie between -4 and +4?
For each of the following functions, indicate whether its graph is concave or convex:
Y = 7x2 + 3x + 9
Y = 6 ln(3x)
Y = exp(-4x)
The gradient of a function f(x, y, z) = x + y2 - x y z at the point x = y = z = 1 is
TESTED 24 Nov 2024
