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quad my own function with mp object

hongtaowei 10 jaar geleden • bijgewerkt door Pavel Holoborodko 10 jaar geleden • 5
hi, i have a function with its parameters of mp object, for example, k is a mp object, x is syms, and the function:phi=@(x,k,B) A*sin(k*x)+B*cos(k*x)-A*sinh(k*x)-B*cosh(k*x), I found it does not allow me to multiply k*x, how can I quad this function?
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Pavel Holoborodko 10 jaar geleden
Please modify your program so that x become of "mp" type.

In general, there is no interconnection between "sym" and "mp" - since "sym" is of closed format of Mathworks.
We are not able to provide mixed-type operations for them.
hongtaowei 10 jaar geleden
Thanks for reply. But x is variable in the function, I try to use mp(x), it didn't work.
Pavel Holoborodko 10 jaar geleden
There is only one way of converting 'sym' to 'mp' - through the string:

x = mp(char(x))  % x becomes of mp type
hongtaowei 10 jaar geleden
Thanks a lot, to be honest, I have tried the function vpa() of the matlab its own, it seems to solve the problem, anyway, thanks, I will use vpa() to do my work in the hand.
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Pavel Holoborodko 10 jaar geleden

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