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Simplifying f(-2pi) = cot(-2pi) Remove parenthesis around (-2ip) f * -2ip = cot(-2pi) Reorder the terms for easier multiplication: -2f * ip = cot(-2pi) Multiply f * ip -2fip = cot(-2pi) Remove parenthesis around (-2ip) -2fip = cot * -2ip Reorder the terms for easier multiplication: -2fip = -2cot * ip Multiply cot * ip -2fip = -2ciopt Solving -2fip = -2ciopt Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by '-2ip'. f = cot Simplifying f = cot
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