Appendix B.pdf - Cambridge University Press

712 Essential Mathematical Methods 3&4CASB5Functions involving more than one variable can also bedefined.Circular functionsMODEThe choice of radian or degree measure is made from theMODE menu.Solving equationsSolve from the Algebra (F2) menu is used. Initially the solution of the equation sin x = 0.5will be considered. The exact solution is given as x = 2k + 5 6 or x = 2k + 6 . Theparameter k is @n2 on the screens. The solution when the MODE chosen is AUTO is alsoshown. The notation @ni indicates that it is the ith parameter to be used.In the following, the syntax for finding the solutions forsin x = 0.5 for 0 ≤ x ≤ 2 is shown. In the entry line:solve(sin x = 0.5, x)| x > 0 and x < 2to give the solutions 6 and 5 6 .SAMPLEIt is also possible to give values to the parameter. Forexample in the following @n2 is given values −1, 0 and 1.The complete entry in the entry line is x = 2 ∗ @n2 + 5 6 orx = 2 ∗ @n2 + | @n2 ={−1, 0, 1}6Cambridge University Press • Uncorrected Sample Pages •2008 © Evans, Lipson, Jones, Avery, TI-Nspire & Casio ClassPad material prepared in collaboration with Jan Honnens & David Hibbard