Command use to convert expression E to numeric form
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Command use to convert expression E to numeric form
4 个评论
Walter Roberson
2021-6-30
Could you give an example?
Su Hyun Kim
2021-6-30
Su Hyun Kim
2021-6-30
Walter Roberson
2021-6-30
exp(1)
for the constant e
exp(x)
for 
回答（2 个）
Star Strider
2021-6-30
1 个投票
If ‘E’ is a symbolic expression (we have no idea exactly what it is), then matlabFunction could be appropriate to turn it into an anonymous function that could be executed numerically. If it is a symbolic scalar or vector, then vpa or double would be appropriate, depending on the desired result.
If none of these are appropriate, I will delete this Answer.
Maybe you mean the output to the command window?
format short
pi * 1e8
format long
pi * 1e8
format long g
pi * 1e8
You have more control using fprintf or sprintf to create the output.
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2021-6-30
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