I do not know how to set this problem up.

Use the meshgrid function to determine all the possible amount that could be in your account at the end for 10 years given the following investments ($1000, $2000, $3500, $1500, $500) and the interest rates (0.15, 0.20, 0.1)

[Walter Roberson]

How would you write the equation for one investment amount at one interest rate for 10 years?

Answer 1

[Div Tiwari]

Looking at the syntax of the 'meshgrid' should provide a hint. Consider

[X,Y] = meshgrid(xgv,ygv)

You may use the principal amounts as one input vector, and for the other, you could provide a vector containing the factor by which an amount would grow in 10 years under each of the given rates. Compare the output matrices to determine the final step(s).

As an aside, the same output can be obtained directly with a single matrix multiplication as well.