Re: 2 equations 2 conditions
- To: mathgroup at smc.vnet.net
- Subject: [mg29165] Re: [mg29131] 2 equations 2 conditions
- From: BobHanlon at aol.com
- Date: Fri, 1 Jun 2001 04:15:27 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
In a message dated 2001/5/31 12:40:37 AM, susuwin at post.kek.jp writes: >I have 2 equations to calculate W(i,j)=Function of (z, L(i,j)). >Equation(1) is used when i>j and Equation(2) when i<=j. >If I have to use if...then, how can i ask Mathematica to take the correct >equation according to condition? > Look up condition in the on-line help then go to its Further Examples. W[i_, j_] := f1[z, L[i, j]] /; i > j; W[i_, j_] := f2[z, L[i, j]] /; i <= j; W[5, 3] f1[z, L[5, 3]] W[3, 5] f2[z, L[3, 5]] Bob Hanlon Chantilly, VA USA