in octave-online.net the vpa() function returns me the non precise result. If i try some computation with a lot digits behind decimal after 49's digit is the result zero. Is there some trick how to compute with a lot digits behind decimal?
vpa((pi-1),100)
returns:
2.141592653589793115997963468544185161590576171875000000000000000000000000000000000000000000000000000
I have similar problem for similar inputs with different length(e.g. vpa((113/111),100))
Thank You.
trying:
vpa((pi-1),100)
expecting: 2.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117068
With vpa((p-1),100) the calculation of pi-1 is done using limited precision and the (imprecise) result is then applied to the vpa function.
Instead, the vpa function needs to make the calculation:
vpa('pi-1',100)
giving the expected result:
2.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117068
See more details on the vpa reference page.