Matrix value multiplication error

Hi, so I'm trying to get the n values to multiply each values in the P matrix in order to get the compound interest values, but I'm getting this error, how can I fix this?

Answer 1

[David Hill]

Use the code box!

n=[1,3,16]; 
P=[300 400 500 700 1000]';%transpose
t=4;
y=P.*(1+t/100).^n-P;

[Sherman Ng]

So the question is: Create the matrix based on the principals of [300 400 500 700 1000] and the interest rate 0.04.

So your code partially worked but it only gave me the y value for the principal of 300.

[David Hill]

Not true.

y =

   12.0000   37.4592  261.8944
   16.0000   49.9456  349.1925
   20.0000   62.4320  436.4906
   28.0000   87.4048  611.0869
   40.0000  124.8640  872.9812

[Sherman Ng]

Oh never mind I see what you mean. I got it to work.

For some reason I though this was needed.

Year_1=y(1);
Year_3=y(2);
Year_16=y(3);
T=table(Year_1 , Year_3, Year_16);