Appendix B.pdf - Cambridge University Press

Appendix B—Computer Algebra System (TI calculators) 707factor(2x 4 − x 2 )factor(2x 4 − x 2 , x)The factor command can also be used to give the primedecomposition of integers.3:expand(This command is used in the expansion of expressions.Forexample:expand((a + b) 3 )expand((a + √ 2b) 2 )In the following, storing an expression to a memory location will also be utilised. If thename of a variable is given as the second argument, then the expansion will be given indecreasing powers of that variable.Store (x + y) 3 to memory location d and then expandwithout, and then with, a designated variable.The expand command can also be used to form partial fractions.Forexample:( ) 1expandx 2 − 1SAMPLE( x 3 )+ 2x + 1expandx 2 − 1Sometimes extra conditions are required for the expansion to be carried out as expected.Cambridge University Press • Uncorrected Sample Pages •2008 © Evans, Lipson, Jones, Avery, TI-Nspire & Casio ClassPad material prepared in collaboration with Jan Honnens & David Hibbard