Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)
Question 9348: I need some refreshing. I have a problem figuring out some of the rules and properties of negative exponents. As an example: (-3y^-1)^-1
I'm not concerned with the answer, as much as I am on how and why do do the steps to solve it.
Click here to see answer by longjonsilver(2297)   |
Question 11731: A charged particle moves from 0.2m to 0.5m from a fixed reference point in 0.5us. Find its average speed during that interval (1us=10^-6 s)
I tried to figure it out and here is what I did
Now I can tell by looking in the answer book that the answer is:
 m/s
when I see this answer I cant help but think not only am I doing it wrong but its probably pretty simple... unfortunately the books guide and examples are not helping me to understand how to do the problem. The reason I am probably not understanding is the book is a introductory caclulus dealing with limits the section I am on is for "instantaneous speed of an object" and I am most likely not remembering how to do something that is covered in earlier maths like algebra.
any help or guidance is greatly appreciated.
Click here to see answer by Earlsdon(6287) |
Question 12346: I have to graph the function y=e where "1/x" is the fractional exponent of "e". I have plugged in and graphed it for the positive integers, but I am confused about how to get answers for the negative integers. What does e^1/-2 for example look like? I know that with fractional exponents, you use the bottom number as the root and the top as the exponent, but how do you have a negative root of a number, say a negative square or cube of the number? (I know it is different from negative numbers under the radicand, which become imaginary).
Thank you!
Click here to see answer by longjonsilver(2297) |
Question 13802: Dear sir/madam,
Would you mind helping me to solve this equation and to get the value of r?
4r-2000r^-2=0
I calculated the following but know it is incorrect:
4r-2000r^-2=0
4r^-2(r^3-500)=0
Therefore,
4r^-2=0 or r^3-500=0
4/r^2=0 r^3=500
1/r^2=0 r=500^1/3
r^2=1/0 r=7.94
I can't continue on the left, because 1/0 is error. I only got one of the values of r is 7.94, but I could't get the other value of r.
Please reply soon and many thanks for your kind assistance.
On Ki
Click here to see answer by longjonsilver(2297) |
Question 14410: You are picking up a friend and going to a concert. Your friend lives 3 miles west of your house and the concert is 21 miles east of your friends house. When you are at the concert, how far away from home are you?
How can I figure this out please help!
Click here to see answer by elima(1433) |
Question 14477: QUESTION: Conor is scuba diving at a depth of 52.8 feet below sea level. 30 mins later, he is at a depth of 40 feet below sea level. What is his change in depth? Did he go up or down?
PLEASE HELP
Click here to see answer by elima(1433) |
Question 14551: PLEASE HELP!!!!!You are playing 3-hole golf. On the first hole you score 1 under par, on the second hole you score 2 over par, and on the third hole you score 1 under par. What was your score for the game? (If you are at an even par your score is zero. In golf the total score is given as the number of strokes above or below par, expected score.)
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Click here to see answer by Alwayscheerful(414) |
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