Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

  • Index
  •  » Help Me !
  •  » Find the entry in the second row, first column of AB

#1 2013-05-29 02:41:06

mom
Full Member

Offline

Find the entry in the second row, first column of AB

Please let me know if I did this correctly.

I have Let A = [1 4] and B = [3 -2]. find the entry in the second row, first column of AB.
                       2 3                4  6

I multiplied A and B to get AB and the number I got for the second row, first column of AB was 18. Did I do this correctly?

#2 2013-05-29 03:25:57

bob bundy
Moderator

Offline

Re: Find the entry in the second row, first column of AB

That looks good to me.  smile

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

#3 2013-05-29 03:47:58

mom
Full Member

Offline

Re: Find the entry in the second row, first column of AB

Bob,

nice! thanks so much for checking it for me.

  • Index
  •  » Help Me !
  •  » Find the entry in the second row, first column of AB

Board footer

Powered by FluxBB