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Many Decimals with vpa()

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Maxime Rivard
Maxime Rivard 2017-12-5
回答： Walter Roberson 2017-12-5
I understand vpa can give my many decimals of pi, for example. But what if I want to input myself a number with many digits, say 1.282884769975957739739957395739? If I type vpa(1.2828847699759577397399573957,30), I get 1.28288476997595779494076850824, which is not the number I want. I ultimately just want to do calculations on a precise initial number.
Thanks.

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Walter Roberson
Walter Roberson 2017-12-5
vpa('1.2828847699759577397399573957',30)
Better yet,
x = sym('1.2828847699759577397399573957');
vpa(x, 30)

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