- #1

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PS: One more thing. How to write mathematics with latex?

- Thread starter IB
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- #1

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PS: One more thing. How to write mathematics with latex?

- #2

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What is sqrt (a^2 - a [delta] d) equal to? or are you asking to simplify it?

- #3

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Yeah. I was just wondering whether it can still be simplified.

- #4

Hurkyl

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But as for algebraic manipulation, what you did is wrong. roots and exponents (usually) distribute over multiplication (and division),

- #5

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Could you give an example to demonstrate that? And how can I correct my wrong algebraic manipulation? Thanks.Hurkyl said:But as for algebraic manipulation, what you did is wrong. roots and exponents (usually) distribute over multiplication (and division),notaddition (and subtraction).

- #6

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Here is the thread on how to use the LaTeX thingy:

https://www.physicsforums.com/showthread.php?t=8997

Have fun!

-Jon

- #7

VietDao29

Homework Helper

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So:

[tex]\sqrt{a ^ 2 - a \Delta d} = \sqrt{5 ^ 2 - 5 \times \frac{9}{5}} = \sqrt{25 - 9} = \sqrt{16} = 4[/tex]

And:

[tex]a - \sqrt{a \Delta d} = 5 - \sqrt{5 \times \frac{9}{5}} = 5 - \sqrt{9} = 5 - 3 = 2[/tex]

And 4 is not 2.

Viet Dao,

- #8

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Thanks, VietDao29.

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