Let X=(6, 9] u{10,11.} and A=(9,11,12} and metric defined on X as d(x.y) |x - yl (1) Find interior of A (2) Find limit points of A ( 3) Find open ball B(10,3)

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.