# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2012 | May-Jun | (P1-9709/13) | Q#4

Question i. Solve the equation for . ii. How many solutions has the equation for ? Solution i. We are given; To solve this equation for , we can substitute . Hence, Since given interval is , for interval can be found as follows; Multiplying the entire inequality with 2; Since ; Hence the given interval for is . To solve equation for interval , […]