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Thread: Maths Question

20100207, 23:18 #1
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I have a calculation in a procedure:
CD = (E  (2 * .286 * A)) / 2 + (M * A / PI) / 2
E A & M are given.
but I have situations where I need to calculate A when CD E & M are known.
Can someone rewrite the equation for me please, its making my brain hurt!"Heading for the deep end"

20100208, 00:20 #2
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I hope I have not made any silly mistakes...
CD = (E(2 * .286 * A)) /2 + (M *A/PI)/2
2 * CD = E(2 * .286 * A) + (M *A/PI) Multiply both sides by 2
= E A*(2 * .286) + A*(M *1/PI)
= EA*((2 * .286 )  (M *1/PI)) Bring the common factor of A to the front
(2*CD) E = A*((2 * .286 )  (M *1/PI)) subtract E from both sides
E2*CD = A*((2 * .286)  (M * 1/PI)) multiply both sides by 1
A = (E 2*CD) / ((2 * .286)  (M * 1/PI))Regards
John

20100208, 03:08 #3
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20100208, 16:33 #4
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John,
Many thanks, your maths was spot on!
Gfamily,
I've never played with solver before but thanks for the suggestion."Heading for the deep end"