The problem statement says to "multiply by ninety", but the problem is clearly to multiply by 20. I think it is a typo.
Find the sum of all the numbers of the input vector
Determine if a Given Number is a Triangle Number
Matlab Basics II - Count rows in a matrix
MATLAB Basic: rounding III
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office