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January 26th, 2009, 08:06 PM  #1 
Newbie Joined: Jan 2009 Posts: 10 Thanks: 0  Help on some questions
Need help on these questions, been working on this assignment for awhile now but have no idea how to solve these. Its due tonight so please respond soon. Also could you help explain how to solve? 1.Find a function whose graph is the given curve. The bottom half of the circle x2 + y2 = 81 2.According to the Theory of Relativity, the length L of an object is a function of its velocity v with respect to an observer. For an object whose length at rest is 11 m, the function is given below, where c is the speed of light. a) Find L(0.1c), L(0.62c), and L(0.82c). 3. Use the function to evaluate the indicated expressions and simplify. f (x) = 15x  45 f (x/3) = f (x)/ 3 = 4. Use the function to evaluate the indicated expressions and simplify. f(x) = 3x  9 f(x2) = (f(x))2 = 5.Use the function to evaluate the indicated expressions and simplify. f(x) = 5x2 + 6 f(x + 2) = f(x) + f(2) = 6.Complete the table of values for the following function. f(x) = (8x) / sq rt x 2 1 0 1 2 3 
January 27th, 2009, 12:15 PM  #2  
Global Moderator Joined: Dec 2006 Posts: 19,963 Thanks: 1849  Quote:
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For the second, divide both sides of the equation you were given by 3. Question 4 can be done similarly. Quote:
Evaluate f(2) by replacing x with 2 in the equation given. Now f(x) + f(2) is obtained by adding the result to the righthand side of the equation given for f(x). Quote:
 

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