### How JustAnswer Works:

• Ask an Expert
• Get a Professional Answer
• 100% Satisfaction Guarantee

Ryan, Engineer
Category: Homework
Satisfied Customers: 8653
Experience:  B.S. in Civil Engineering
40260889
Type Your Homework Question Here...
Ryan is online now

# tom thats nor right it should be three points on the curve

### Customer Question

tom thats nor right it should be three points on the curve no?
Submitted: 4 years ago.
Category: Homework
Expert:  Tom replied 4 years ago.

Not necessarily, there are maximum 3 but not necessarily 3 points. However, I see that I have indeed made an error, for which I'm very sorry. The correct answer should be:

The points of intersection can be found for those values x when:

1/2 x³ + x² + 1 = 9x² - 57/2 x +1

=> 1/2 x³ - 8x² + 57/2x = 0

=> x (x² - 16x + 57) = 0

=> x = 0 or x = 8+√7 or x = 8-√7

So there are indeed 3 points of intersection: (0,1) , (8+√7, 412 + 231/2 √7) and (8-√7, 412 - 231/2 √7) (or with rounded numbers (0,1), (10.646, 717.584) and (5.354, 106.416) )

Again my apologies for this error (no need to accept this answer off course!)

Best regards,

Tom

Customer: replied 4 years ago.
No tom,, its still not correct it says,
Customer: replied 4 years ago.
Customer: replied 4 years ago.
Expert:  Ryan replied 4 years ago.
THIS ANSWER IS LOCKED!

You need to spend \$3 to view this post. Add Funds to your account and buy credits.
Customer: replied 4 years ago.
toms amswer is 412..yours is 421..plus 841/2 is not 421
Expert:  Ryan replied 4 years ago.
THIS ANSWER IS LOCKED!

You need to spend \$3 to view this post. Add Funds to your account and buy credits.

### JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

### What Customers are Saying:

• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Previous | Next >
• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
• This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
• Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
• I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
• Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
• Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
• He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX

• ### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
< Last | Next >

### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML

### Manal Elkhoshkhany

#### Satisfied Customers:

4538
More than 5000 online tutoring sessions.

### Linda_us

#### Satisfied Customers:

3138
Post Graduate Diploma in Management (MBA)

### Chris M.

#### Satisfied Customers:

2602
Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

### F. Naz

#### Satisfied Customers:

2126
Experience with chartered accountancy

### Bizhelp

#### Satisfied Customers:

1887
Bachelors Degree and CPA with Accounting work experience