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You need to buy it as it is not a default programme. You can get it here : http://www.savemedeals.com/collective-buying/pretoria/products/38-por-cento-discount-on-the-complete-junior-primary-mathematics-programme-from-compu-maths-pay-only-r249-usual-price-r399-572668
In general no. He/she will need some elementary vector calculus as well if he will try solve problems regarding design of various circuits powered by AC. Some elementary integral/differential calculus will be useful if he/she wants to solve more complicated problems with respect to power/energy consumption for example.Let just say Algebra is a MUST!
Hello, You get access the command by pressing [MATH][1: |->Frac]. If you want enter a fraction and keep it as a fraction (albeit a reduced one) key in the number then the sequence [MATH][1: |->Frac]., then [ENTER].
Practice : 27/48 [MATH][1: |->Frac] [=] gives the reduced form 9/16. While this fraction is still in [ANS] memory, you can press [MATH][2: |->Dec] [=] to get the decimal value 0.5625 Hope it helps.