Consider W a solid region in R°, such that W is inside 2² + y? + 2? = 25 and outside 2² + y? = 9 and above the plane z = 0. (a) Sketch W. (b) Use spherical coordinates to find the total mass of W if its density (mass per unit volume) is given by 1 p(x, y, z): 1² + y² + z²

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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.