Q1B - (Write a formula using logarithm) 2. (5pts) Draw the...

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Name: Quiz 1 1. (8pts) A radioactive substance decays exponentially with half life 25 years. (a) Find a formula for the amount of the substance when P (0) = 50 g . (b) Suppose there are now 10 g of the substance left. Determine how many years ago the radioactive decay of this substance started.
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Unformatted text preview: (Write a formula using logarithm) 2. (5pts) Draw the graph of y = arccos( x ). 3. (7pts) Give an approximation formula using the sine or cosine function for a perodic function f ( x ) with period π/ 3, largest value 10, and smallest value 0. Arrange that f (0) = 0...
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