1. Use the e-8 definition of the limit to show that x3 – 2x + 4 lim X-ix2 + 4x – 3 3 !3! Use the sequential criteria for limits, to show that the following limit does not exist limsgn ( cos X-2 (x-2)". where sen is the signum function.

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.