how reduce time of numerical integral?

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Brede roberson
Brede roberson 2016-2-7
回答： Brede roberson 2016-2-7
my Numerical Solution of Integral takes a lot of time. While I need accuracy to four decimal places for answer . How do I reduce the decimal precision of integrator answer to reduce time ? for example:
A=double(int(f(x),a,b));

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Brede roberson
Brede roberson 2016-2-7
by using A=vpa(int(f(x),a,b),4);

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