Re: How to force numeric output

*To*: mathgroup at smc.vnet.net*Subject*: [mg115600] Re: How to force numeric output*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Sun, 16 Jan 2011 05:51:51 -0500 (EST)

On 1/15/11 at 4:45 AM, ramsey2879 at msn.com (KenR) wrote: >I am new to Mathematica and cant seem to get it to give a numeric >answer to >input y = 5; x = floor[sqrt[y+1.0]]; x. >instead of a numeric it gives "out floor[sqrt[6.0]]" >what am I doing wrong? All built-in functions in Mathematica begin with an uppercase letter. So, anything you enter that begins with lowercase letter will be something *you* have to define before Mathematica can do anything other that take it to be an arbitrary symbol or function. So, try y = 5; x = Floor[Sqrt[y+1.0]]