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Simplifying f(x) = cos(-6x + 7) Multiply f * x fx = cos(-6x + 7) Reorder the terms: fx = cos(7 + -6x) fx = (7 * cos + -6x * cos) fx = (7cos + -6cosx) Solving fx = 7cos + -6cosx Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = 7cosx-1 + -6cos Simplifying f = 7cosx-1 + -6cos Reorder the terms: f = -6cos + 7cosx-1
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