There are two unknowns, A.B., whose range is 2.25 There is such a relationship between a and B: when a is the maximum, B is the minimum; when B is the maximum, a is the minimum.

There are two unknowns, A.B., whose range is 2.25 There is such a relationship between a and B: when a is the maximum, B is the minimum; when B is the maximum, a is the minimum.

When a is the maximum, B is the minimum: 2.8x0.8 = 2.24
When B is the maximum, a is the minimum: 2.25x1.35 = 3.0375
When B is the maximum, a is the minimum and their product is the maximum

If a ^ 2 + B ^ 2 = 8, the value range of a + B is?

(a+b)^2

How to find a, B coordinates, vector AB

Given a (a, b), B (C, d), then the vector AB = (C-A, D-B)