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Hey. Hope everyones well. First post on this forum !!!! I had this question regarding an equation, its about max/min point and re-arraning.
Heres the equation:
The current in an A.C. circuit at any time "t" seconds is given by:
i = 80sin (100*pi*t + 0.47)
1) The time when the current is a minimum
2)The times when i = 0.
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Hey, can anybody not help on this?
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2) substitute with 0 and solve for t.
IPBLE: Increasing Performance By Lowering Expectations.
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hmmm but krassi, thats the problem. its asking for times! if i substitute with 0. it will only give me one time.
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Find di/dt. Put di/dt=0. Substitute the values in d²i/dt². If d²i/dt² positive, i is minimum.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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