How to do write the codes for this summation problem?

How to write the codes for this.

where

n=5

T=[0.56, 0.23, 1.58, 2.69, 1.1]

Thank you.

Answer 1

[Alan Stevens]

Having defined n and T then

B = 1./(log(T) - mean(log(T)));

Note that in Matlab, log is log to base e.

[Alan Stevens]

In fact, you don't need to define n explicitly!

[MD. Rokibujjaman sovon]

Thanks.

If there is not a mean, then how should i write it? For example,

T=[0.56, 0.23, 1.58, 2.69, 1.1]

[Alan Stevens]

In that case use

sum(log(T))

for the summation part.

Type help sum in the command window for more detail.

[MD Rokibujjaman Sabuj]

I tried to check there at first. But i don’t understand how to define the i. Can you kindly write the full codings? It will help me to understand.

[Alan Stevens]

You don't need to do the i, MATLAB automatically adds up all the terms.

[MD Rokibujjaman Sabuj]

I tired to use B = 1./(log(T)-sum(log(T)))

But it’s not running.

[Alan Stevens]

Upload the exact code that you used (use the code button in the menu ribbon).

[MD. Rokibujjaman sovon]

I tired to use

T=[0.56; 0.23; 1.58; 2.69; 1.1]
B = 1./(log(T) - sum(log(T)));

[Alan Stevens]

It works for me:

>> T=[0.56; 0.23; 1.58; 2.69; 1.1];

B = 1./(log(T) - sum(log(T)))

B =

-13.7741

-1.0390

1.0367

0.6681

1.6597

Look in the Workspace window to see the values, or remove the semicolon to see the values in the command window.

[MD Rokibujjaman Sabuj]

Its working now. Thanks.