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Check the following mathematical statement with W|A?

GROUPS:

Even though it's correct to calculate tangent in order to check the statement, shouldn't Wolfram do it after expanding the brackets?

Error screenshot

POSTED BY: Just Bucket
Answer
9 months ago

Mathematica syntax uses Tan[z], ArcTan[z].

POSTED BY: S M Blinder
Answer
9 months ago

There's a difference in Mathematica between Equal or == and SameQ or ===. The triple-equal relation tests whether the expressions are identical. It does not try any transformations to see whether they are mathematically equivalent. Apparently W|A interprets the triple-equal in the WL way. W|A seems to work ok with = or == (that is, it returns "True"). I suppose the W|A developers felt that === is not standard notation except in Mathematica and assigned it the SameQ interpretation.

POSTED BY: Michael Rogers
Answer
9 months ago

Just FYI, you can choose "Wolfram | Alpha" in your groups

POSTED BY: Shujie CHEN
Answer
9 months ago

Group Abstract Group Abstract