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I have a Fortran 90 program in which I perform many matrix multiplications. I would like to find a product with a userdefined precision. To do this, I am using vpa(). I cannot use sym() due to memory constraints of the program. The problem I have is in how to use vpa() correctly. For example, suppose I want to perform the following multiplication, accurate to 100 decimal places: 
"ben payne" <ben.is.located@gmail.com> wrote in message <hqfald$g20$1@fred.mathworks.com>... 
"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in message <hqfej0$fj4$1@fred.mathworks.com>... 
"ben payne" <ben.is.located@gmail.com> wrote in message <hqfg9c$bii$1@fred.mathworks.com>... 
"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in message <hqfj77$p87$1@fred.mathworks.com>... 

On Apr 18, 3:05 pm, "ben payne" <ben.is.loca...@gmail.com> wrote: 
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