Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #2 20051231 06:46:19
Re: Factor Theorem?hello katy! #3 20051231 06:47:29
Re: Factor Theorem?If you divide your equation by x1 you will get x²  2x  15 #4 20051231 07:50:55
Re: Factor Theorem?
Not. IPBLE: Increasing Performance By Lowering Expectations. #5 20051231 07:51:57
Re: Factor Theorem?Actually the katy's polynomial is unractorizable. IPBLE: Increasing Performance By Lowering Expectations. #6 20051231 08:47:30
Re: Factor Theorem?Hi Katy Last edited by deepu (20051231 08:49:26) #7 20051231 09:04:26
Re: Factor Theorem?It has one zero but it isn't rational: Last edited by krassi_holmz (20051231 09:05:41) IPBLE: Increasing Performance By Lowering Expectations. #8 20051231 10:41:53
Re: Factor Theorem?Code:x^3 + 3x^2 + 13x  15 the factor theorm, what is that? x (x^2 + 3x + 13) = 15 Guess 1, too big Guess .9, .9 (.81 + .27 + 13) = 15 Guess .95, too big Guess .92, 15.28 Guess .91, 15.07 Guess .9067, 14.999 Close enough. So factor out (x  .9067) x  .9067 x^3 + 3x^2 + 13x  15 quotient: x^2 + (3 + .9067)x + (13 + .9067(3  .9067)) There is a remainder so imaginary pair?? dividing calculations: x^3  .9067x^2  .9067(3  .9067)x  .9067(13 + .9067(3  .9067)) krassi_holmz's mathimatica got: .906756576 Because it didn't divide almost evenly, instead of getting 15 on end, it multiplies to about 13.5, Last edited by John E. Franklin (20051231 10:43:55) igloo myrtilles fourmis #9 20051231 22:43:39
Re: Factor Theorem?Yes. Other roots are immagineric. IPBLE: Increasing Performance By Lowering Expectations. #10 20051231 23:02:44
Re: Factor Theorem?A factorization in complex numbers: IPBLE: Increasing Performance By Lowering Expectations. #11 20060101 02:37:49
Re: Factor Theorem?How did you get a1a2+a2a3+a3a1=13 ?? and what does the  symbol mean? igloo myrtilles fourmis #12 20060101 02:46:17
Re: Factor Theorem?Here is it: IPBLE: Increasing Performance By Lowering Expectations. #13 20060101 18:37:11
Re: Factor Theorem?a1a2a3=15 igloo myrtilles fourmis #14 20060101 20:40:39
Re: Factor Theorem?The coeficient for x^2: IPBLE: Increasing Performance By Lowering Expectations. #15 20060102 03:34:12
Re: Factor Theorem?Oops, my mistake. Nice explaining! igloo myrtilles fourmis 