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

You are not logged in. #1 20080722 02:44:34
Determine all real numbersDetermine all real numbers that satisfy the following system ofequations. #2 20080722 03:24:48
Re: Determine all real numbersRewrite the second, third and fourth equations as Now multiply these equations by , and respectively. Now notice that Hence we have Thus we get these two inconsistent equations Solve the first cubic for a and use it to find d. Last edited by JaneFairfax (20080722 08:26:45) 