r.h.a Posted October 14, 2012 Report Share Posted October 14, 2012 I have a quiz tomorrow, and I am very confused about how to express the domain in interval form, can someone please for example find the domain of these using the interval form?a)1/(x+2)b) square root (x-3)c) cubic root (x+8)d) 3x-4e) square root (5-2x)f) (x-5)/(x^2-3x+2)g)square root (x^2 -3x -10)h)x^2 +9x +20i) 2x+1j) (x-1)/(x^2+1)PLEASE! Help GREATLY appreciated! Reply Link to post Share on other sites More sharing options...
Beni Posted October 14, 2012 Report Share Posted October 14, 2012 (edited) What I use for practicing the domain is http://www.wolframalpha.comYou can type in your equation and it shows the graph and the domain/range as well as a whole bunch of other information.Hope it can help you, I think it is great for checking your answers and even showing you the result visually. Edited October 14, 2012 by Beni Reply Link to post Share on other sites More sharing options...
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