Matrix value multiplication error

2022 2 12
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更新时间：2022 2 12
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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?

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David Hill
David Hill 2022-2-12

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

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Sherman Ng
Sherman Ng 2022-2-12
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
David Hill 2022-2-12
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
Sherman Ng 2022-2-12
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);

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