Solving a set of equations/inequations

02072017, 03:16 PM
(This post was last modified: 02072017 07:56 PM by compsystems.)
Post: #1




Solving a set of equations/inequations
Hello, I can not solve a system that has an equation and an equation with hpprime, some command in particular?
1: HPprime solve( {(x+y)<10,(x^2) = 9}, {x,y} ); returns [] 2: With maple, I get { solve({ x+y<10, x^2=9 }, { x, y }) } returns { {x = 3, y < 13}, {x = 3, y < 7} } // Output form as a set or list/array (x = 3 and y < 13) or (x = 3 and y < 7) // Output form as an expression (and, or) 3: wolframα Reduce[{x + y < 10, x^2 == 9}, {x, y}] returns (x == 3 && y < 13)  (x == 3 && y < 7) https://www.wolframalpha.com/input/?i=so...)+%3D+9%7D with 4: TI68k (TI92+/TIV200) you have to know how to interpret the parameter at (@) solve(x+y<10 AND x^2=9, {x,y}) returns (x = 3 and y < @1 and @1 < 13) or (x = 3 and y < @2 and @2 = 7) // Output form as an expression (and, or, @) for a output form as a set or list/array to use expToList(Ans(1)) cmd [[when(@2<7,3),when(@2<7,@2)][when(@1<13,3),when(@1<13,@1)]] But I think there is a problem in the decoding [[when(y<7,3),when(y<7,y)][when(y<13,3),when(y<13,y)]] ? [when(y<7,3),when(y<13,3)] 

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Messages In This Thread 
Solving a set of equations/inequations  compsystems  02072017 03:16 PM
RE: Solving a set of equations/inequations  Aries  02152017, 03:31 PM
RE: Solving a set of equations/inequations  Han  02152017, 03:54 PM
RE: Solving a set of equations/inequations  Aries  02162017, 09:19 AM
RE: Solving a set of equations/inequations  Simone Cerica  02172017, 11:18 AM
RE: Solving a set of equations/inequations  parisse  02162017, 10:23 AM
RE: Solving a set of equations/inequations  parisse  02172017, 04:44 PM
RE: Solving a set of equations/inequations  Simone Cerica  02172017, 04:45 PM

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