2) find the radius and coordinate center for the equation 2x42y+10y-12х-20-0 3) prove that sin 2x cos 2x sec x sin x cOs x

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A: show that the equation cos2x(tan2 2x+ 3)+3=0 can be expressed as  2cos2 2x + 3cos2x+1=0

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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.