Re: estimation
- To: mathgroup at smc.vnet.net
- Subject: [mg108602] Re: estimation
- From: Tomas Garza <tgarza10 at msn.com>
- Date: Thu, 25 Mar 2010 04:23:35 -0500 (EST)
If by "estimate" you mean "evaluate", then just use the right syntax. The exponential function in Mathematica is written Exp, and its argument must be inside brackets "[" and "]". For example, if you wish to use z== -1 + I (a complex number with Re(z)<0, where I is the syntax for the imaginary i): In[27]:== z (-1/2 Exp[2*z]+3/2*Exp[z])/.z->-1.+I Out[27]== -0.729119-0.076501 I I just copied your expression and substituted the exp() by Exp[]. The period after the last 1 is meant to give you a numerical value. Tomas > Date: Wed, 24 Mar 2010 04:43:19 -0500 > From: magdamoczydlowska at gmail.com > Subject: [mg108586] estimation > To: mathgroup at smc.vnet.net > > Hi, > > Do you know how to estimate z (-1/2 exp(2*z)+3/2*exp(z)) where z is a > complex number ( Re(z)<0). > > Thank You, > Magdalena >