Q) Find the equations of the lines parallel to x-axis between which the graph of y= lies .

A)

y=

This is of the form : | 2ab / (a^2 + b^2) | where a is 2x and b is 3. And we know: (a - b)^2 > = 0a^2 + b^2 > = 2ab so | 2ab / (a^2 + b^2) | < = 1 so y < = 1 and y > = 0 ....(since it is absolute value of something) So the two boundary lines are y = 1 and y = 0 . |

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