I have finished my basic program questions could anybody please check my answers?

[infinity]

It looks fine. However, perhaps the last question means to add index 16 and index 67 of vector x.

[madhan ravi]

Why not try it in command window and see what happens??

[John wick]

I tried the first one and it works but the rest I'm not sure if i can try it.

[John wick]

So should letter c be something like this?

x = index(16) + index(67)

//or should it be

x = x(16) + x(67)

[KALYAN ACHARJYA]

x(92)=[];

x(16) + x(67)

[John wick]

does

x(92)=[];

works better than this one?

x = x(x ~=92)

[Steven Lord]

x(92) = []

removes the 92nd element from x.

x = x(x ~= 92)

extracts all elements of x that are not equal to 92 and stores those elements back into x.

Those aren't the same thing except in certain special circumstances. Your vector x doesn't satisfy those special circumstances.

And I'm assuming since these are three parts of the same assignment that they're meant to build on one another, so in part c you are probably meant to operate on the vector x you created in part a and modified in part b.

[John wick]

Thank you for the clarification! I understand more of it now.

[dpb]

I think you misinterepreted the c) part as Steven said, too. Presuming you started the assignment with a clean workspace, see what

whos

shows you after the above...not what you're expecting methinks... :)

Answer 1

[boris vuleta]

I agree with Steven too, and just want to ask how you can't test these exercises in command window. Also If I may to add there are loots of help documents with matlab that can clarify your concerns. For an example if you need to known how linspace function works, just type in comm window doc linspace and new window appears. Good luck with your assignments and learning matlab ?

[John wick]

During that time i was pretty confused in creating the exercises but i understand some of the basics. I also learn the command using doc (that's really cool) but sometimes it's confusing when I read it. I'm almost done with the tutorial! and i will try to redo it. Thank you very much!

[dpb]

Another couple of useful documentation tools--

help

by itself gives a top level list of categories and then a hyperlink to the category that gives a oneline list of what is in that category. This is very useful to see what's in any given area quickly without all the details. You can see what might be interesting for a given task quickly and then delve more fully into each via doc

The second is

lookfor searchword

that will look for (clever name, huh?) the word in the function one-line description. This can help find those functions related to some operation that you wish to do but don't know what the name of the function is, specifically.

These old text command line tools don't get the respect they deserve any more with the emphasis on HTML. That has its place when you once know what you're looking for and need the details, but for top level searching it's more clumsy than needs be...altho don't forget the search facility therein, either...

[John wick]

New Knowledge! hahaha thank you for those useful tools!