Verifying Solutions In Exercises 5–10, verify that each x-value is a solution of the equation. 5. tan x - /3 = 0 6. sec x – 2 = 0 (a) x = 3 (a) x = 3 57 (b) x = 3 (b) x = 3 7. 3 tan? 2x – 1 = 0 8. 2 cos? 4x – 1 = 0 (a) x = 12 (а) х %—D 16 57 (b) х %3 12 (b) x = 16 9. 2 sin? x – sin x – 1 = 0 (а) х %3D 2 (b) x = 6 10. csc x — 4 сsc? x %3D 0 (а) х %3 6 57 (b) x = 6

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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.