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1/2 sqrt(4r^2-a^2)

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Start your 7-day free trial(1/2) * sqrt(4r^2-a^2) or 1 / (2 * sqrt(4r^2-a^2))

Much better to clarify first, especially when dealing with typewriter equations.

Yes, it is a little bit tricky.

If you are using normal rules, then multiplication and division have the same precedence so you should start solving the equation from left to right - like (1/2)* sqrt(4*r^2-a^2)=0,5*sqrt(4

That is in case that poster just forgot to write multiplication sign.

In this case my comment is correct one.

But if poster did not wrote the multiplication sigh by purpose and he is using the rule that some use that implied mutiplication has precedence before division, then the formula should look like 1/(2 * sqrt(4*r^2-a^2)).

In this case Ejigl is right...

½√(4r²-a²)

and/or the context.

I understand you are trying to cover wrong typing, but you should first take the posters word literally. In particular as the formula looks much more familar if interpreted strictly.

http://blogs.ptc.com/2011/11/10/math-basics-order-of-operations-precedence-and-tricky-brainteasers/

Accepted answer: 500 points for hgholt's comment #a41033574

for the following reason:

This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.

The request is not ambiguous.

I read the question wrong, and made a mistake in the solution.

davorin has the correct solution.

Math rules clearly is that no sign means multiplication.

Math / Science

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=1/(2*SQRT(4*A1^2-A2^2))