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Simplifying f(x) = 1 + cosx Multiply f * x fx = 1 + cosx Solving fx = 1 + cosx Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = x-1 + cos Simplifying f = x-1 + cos Reorder the terms: f = cos + x-1
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