A community for students.
Here's the question you clicked on:
 0 viewing
JetWave600
 3 years ago
How do I express 1/5x^3 using inverse notation?
JetWave600
 3 years ago
How do I express 1/5x^3 using inverse notation?

This Question is Closed

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1342726354928:dw

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1You mean like how \(\large \frac{1}{x}\) = x\(^{1}\) ???

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0I guess so, the answer is (1/5)x^3, but I want to know why that is the answer.

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1342727173036:dw

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1If you want to know why you should graph both 1/x and x^1 :) \(y_1 = \frac{1}{x}\) \(y_2 = x^{1}\) Input a few values and you will see they are identical. when x=1, the output for each is? when x=2? when x=3? A negative on the exponent is the same as a fraction. If you want to get even more technical than that it's going to pull on some very difficult for me to explain highermath proofs. \(\large x^{\text{ anything}} = \frac{1}{\text{anything}}\) The constant is just one fifth. \[\frac{1}{5x^3} = \frac{1}{5} * \frac{1}{x^3}=\frac{1}{5}*x^{3}\]

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1Welcome to OpenStudy btw :D Here's our community's rules if you were curious: http://openstudy.com/codeofconduct Does this make a bit more sense now? If not, then start graphing the first few point from 1 to 5 for these two. (put in 1 for x, get something out for 5, then plot the coordinate)

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0I'm understanding a bit more, but what if the denominator is like x+5?

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1\[\frac{1}{x+5} = (x+5)^{1}\]

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1FYI: As you can see the parenthesis become very important to ensure you're adding THEN using the exponent. Otherwise it's just x+\(\frac{1}{5}\) which is wrong lol. We should always be able to go forwards or reverse in mathematics. That's very common mistake for many people, forgetting "( )", so get into the practice of using parenthesis around polynomials when you can to help you out :)

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0A lot more sense then the rest of the internet.

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1Well if that made sense to you then you should also learn this, it's extremely helpful from Algebra onward & upward! \(\large \sqrt{x} = x^{\frac{1}{2}}\) \(\large \sqrt[3]{x} = x^{\frac{1}{3}}\) \(\large \sqrt[4]{x} = x^{\frac{1}{4}}\) etc... \(\large \frac{1}{\sqrt{x}} = x^{\frac{1}{2}}\) \(\large \frac{1}{\sqrt[3]{x}} = x^{\frac{1}{3}}\) \(\large \frac{1}{\sqrt[4]{x}} = x^{\frac{1}{4}}\) etc... Roots are just fractional powers! Negative powers are just inverses (fractions with 1 divided by something) Learn this well and you'll find things to be much easier :)

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1Four possible situations: positive, normal exponent (i.e.: x^2) negative, normal exponent (your question here) positive, fractional exponent (same thing as a root) negative, fractional exponent (1 divided by said root, an inverse root) That's everything for how exponents work :)

JetWave600
 3 years ago
Best ResponseYou've already chosen the best response.0Thanks for everything!

agentx5
 3 years ago
Best ResponseYou've already chosen the best response.1Good luck out there! And I hope you can really get this property down :D It helps, don't skip it
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.