How to expand (x1.95)(x4)(x+7.98) in the Prime?

04242016, 03:42 PM
(This post was last modified: 04242016 03:45 PM by bigjohnson.)
Post: #1




How to expand (x1.95)(x4)(x+7.98) in the Prime?
Hey guys, I'm having a problem expanding expressions involving decimal numbers.
I type the expression (in CAS) then I put to simplify, but it doesn't. It returns the same expression, but if I do with natural numbers it does expand. For example, for (x1.95)(x4)(x+7.98) it should return x^3+2.03 x^239.681 x+62.244, but it doesn't, it returns the same input expression. But for example, if I type (x1)(x4)(x+7) and put to simlify, it does return the expanded form x^3+2 x^231 x+28 Does anyone know how to overcome this? Thanks a lot! 

04242016, 03:56 PM
Post: #2




RE: How to expand (x1.95)(x4)(x+7.98) in the Prime?
Try:
normal((x1.95)*(x4)*(x+7.98)) > x^3+2.03*x^239.681*x+62.244 normal((x1)*(x4)*(x+7)) > x^3+2*x^231*x+28 road 

04242016, 03:58 PM
(This post was last modified: 04242016 04:03 PM by DrD.)
Post: #3




RE: How to expand (x1.95)(x4)(x+7.98) in the Prime?
Did you try:
expand((x1.95)*(x4)*(x+7.98)) ==> x^3+2.03*x^239.681*x+62.244 expand((x1)*(x4)*(x+7)) ==> x^3+2*x^231*x+28 Dale 

04242016, 04:00 PM
Post: #4




RE: How to expand (x1.95)(x4)(x+7.98) in the Prime?
(04242016 03:42 PM)bigjohnson Wrote: Hey guys, I'm having a problem expanding expressions involving decimal numbers. If you use expand() as per your subject line you get the result you want. I.e. expand((x1.95)*(x4)*(x+7.98)) > x^3+2.03 x^239.681 x+62.244 Cheers, Terje 

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