Round off errors (Decimal Place)

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Mantej Sokhi
Mantej Sokhi 2022-9-25
编辑： Mantej Sokhi 2023-10-22
How would I round off each number (let's say n = 1:1000) upto 5 decimal digits first and then round up their sum to 5 digit decimal arithmetic ?

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回答（1 个）

Bala Tripura Bodapati
Hi Mantej,
It is my understanding that you would like to round off individual elements of a vector up to 5 decimal points and then round off the sum of elements of a vector up to 5 decimal points.
The following code illustrates an example of performing the above operations on a vector containing 10 elements:
X=1:10
Y=round(1./x,5)
answer=round(sum(Y),5)
By default, MATLAB's output display format is 'short' displaying 4 digits after the decimal point. This behaviour can be modified using the 'format' option. To verify the above operations, the output display format can be changed to 'long' using following command:
format long
After the above command is executed in the command line, the rounded values of individual vector elements and their sum can be verified.
Please refer the below documentation for more information

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