dpb
Posts:
9,823
Registered:
6/7/07


Re: how to enter into vector with variables
Posted:
Nov 7, 2013 1:20 PM


On 11/7/2013 11:53 AM, goatfish wrote: > how do i create an 11entry vector x given by > x=[a, a+1*(0.5), a+2*(0.5)........ a+10*(0.5)] > > I know that something like x=1:1:5 gives x=[1,2,3,4,5]. But i am > confused how to increment something with only some of the variables > increasing while the others stay the same. i.e 0.5 and a is constant and > 0:10 is increasing.
And to amplify on how to see someone's solution or to attack in general, write the algebraic expression you're trying to implement first in as general a form as can
x=[a+0*(0.5), a+1*(0.5), a+2*(0.5)........ a+10*(0.5)] = a*[0*(0.5), 1*(0.5), 2*(0.5)........ 10*(0.5)] = a*0.5*[0, 1, 2 ........ 10]
and the next steps should become apparent. The idea is generic, not just for the specific problem.


