Use of ev() with diff

• Subject: Use of ev() with diff
• From: Ron Wiltshire
• Date: Mon, 7 Feb 2011 18:58:11 +0000

Hello

I am currently using wxMaxima 0.8.3a for Mac having used Macsyma for many years. I find that the function

	ev(sin(x),diff)  does not return cos(x) 

	although

	ev(2*(x+y),expand) will return 2x+2y.

May be I am doing something wrong or perhaps there is a problem with ev(....., diff). Please can you advise?



With kind regards - Ron Wiltshire

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