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remainingbacteria$\_2$d$\_$noedgecase

Consider an experiment where bacteria are grown on a rectangular petri dish divided into an $R-$ by$-C$ grid. Let matrix $M($with $R$ rows, $C$ columns$)$ represent the number of bacteria in

each block of this grid. When a drop of antibiotic is delivered to a specific block at row $x$ and column $y,$ it kills all of the bacteria on that block and half of the bacteria in all of the

neighboring blocks. The figure below shows an example of a plate composed of a $4-$by$-4$ grid, where the numbers represent bacteria count in each block. After the antibiotic is delivered

to the block at $2$nd row and $3$th column, it kills all of the $10$ bacteria on that block and half of the bacteria in neighboring blocks.

Write a function remainingbacteria$\_2$d$\_$noedgecase $(M,x,y)$ that returns a matrix representing the number of bacteria remaining on each block of the petri dish after the antibiotic has

killed bacteria as described above.

Assume that the antibiotic is never delivered to the grids on the edges of the petri dish.

this code did not work and gave me the errors as shown in the picture I attached...

$($function M $=$ remainingbacteria$\_2$d$\_$noedgecase$($M$,$x$,$y$)$

M$($x$-1,$y$)=$ M$($x$-1,$y$)/2$; $\%$ Upper block

M$($x$+1,$y$)=$ M$($x$+1,$y$)/2$; $\%$ Lower block

M$($x$,$y$-1)=$ M$($x$,$y$-1)/2$; $\%$ Left block

M$($x$,$y$+1)=$ M$($x$,$y$+1)/2$; $\%$ Right block

M$($x$,$y$)=0$; $\%$ Current block

end$))$ Grading details

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