Question

Evaluate C - D.
http://roads.advancedacademics.com/contentserver/content/roadssection/277510/questions/6hw5/6hw5_q4.gif

Answer 1

jsut subtract term by term..

Answer 2

*just

Answer 3

im not sure how i would write my answer?

Answer 4

the aswer will be the same size matrix.

Answer 5

its online & i dont know how i would do the brackets like that and line them up that way..

Answer 6

\[\textbf C=\left[\begin{array}\\7&11\\-15&3\\\end{array}\right]\]
\[\textbf D=\left[\begin{array}\\1&0\\4&-\frac{11}{2}\\\end{array}\right]\]

\[\textbf {C+D}=\left[\begin{array}\\7+1,&11+0\\-15+4,&3-\frac{11}{2}\\\end{array}\right]\]

Answer 7

hmmm. that is a problem. do they tell you how to write out the entries? maybe row by row or first column then second column?

Answer 8

Unkle... i think its C-D....

Answer 9

bother

Answer 10

no they didnt say how to write it, & when i write it just underneath eachother it doesnt look right

Answer 11

& yeah its C - D haha i know how to do it, i just dont know how to write it

Answer 12

\[\textbf {C-D}=\left[\begin{array}\\7-1,&11-0\\-15-4,&3+\frac{11}{2}\\\end{array}\right]\]

Answer 13

how would i write it like that on my assignment?

Answer 14

C+D=[(6,11),(-19,17/2)]
maybe

Answer 15

maybe row by row with each entry separated by commas. at the end of a row, use a semi-colon ";" then start again with the next row...
that is at least how i enter it in my calculator....

Answer 16

[(6,11);(-19,17/2)]

Answer 17

i really don't know...:( sorry.

Answer 18

that works, thanks!