Sum of a Vector using a for loop

How can I find the sum of vector x=[3 5 12 42 67], using a simple for loop?

Answer 1

[Walter Roberson]

Hint:

• initialize a variable to the identity element for the operation you are using with respect to the field or group that you are calculating over
• loop over all elements of the array
• inside the loop, replace the variable with OPERATION applied between the variable and the loop value
• at the end of the loop, the variable holds the answer.

[Abraham Robledo]

?

[Guillaume]

We're not going to do your homework for you. Particularly as your problem can be solved by reading the getting started tutorial of matlab.

Walter has been very generous with the hints he's given. Make an effort.

[Walter Roberson]

https://en.wikipedia.org/wiki/Identity_element

[Adam Juckniewitz]

I have similar homework. That advice is pretty helpful!