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Offline DHKIM  
#1 Posted : 17 March 2018 16:50:43(UTC)
DHKIM

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Korea, Republic Of
Location: Suwon

Hello.

I find buf for sine and cosine functions.

Ex.) sin(2*pi)=-2.4492170e-16
cos(3/2*pi)=-1.83690e-16

Check please.

Thanks in advanced.
sin_cos.JPG

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Offline Jean Giraud  
#2 Posted : 17 March 2018 17:30:59(UTC)
Jean Giraud

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Canada

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Originally Posted by: DHKIM Go to Quoted Post
sin(2*pi)=-2.4492170e-16

There is no bug: sin(2pi)=0

Offline Razonar  
#3 Posted : 19 March 2018 09:14:34(UTC)
Razonar


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I agree with DHKIM about this is a bug.

Clipboard01.jpg

For example, it invalidate my favorite integer question function:

Clipboard02.jpg

which I use from Derive for DOS, who knows the exact answer:

Clipboard04.jpg

Best regards.

Alvaro.
Offline Jean Giraud  
#4 Posted : 19 March 2018 14:45:27(UTC)
Jean Giraud

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Originally Posted by: Razonar Go to Quoted Post
I agree with DHKIM about this is a bug.
.
This situation is common in many more types of result.
There should be a work sheet option to assign mathematical '0'.
Long time ago, I claimed for this option.

sinbug.PNG




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