This is a preview. Log in through your library . Abstract Our main goal is to determine the general solution of the functional equation f1(xy) + f2(xy-1) = f3(x) + f4 ...

The tangent function is a trigonometric function that is derived from the sine and cosine functions. In right-angled triangles, the tan of an angle (θ) is the ratio of the side opposite the angle to ...

The sine and cosine functions can be used to model fluctuations in temperature data throughout the year. An equation that can be used to model these data is of the ...

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