cancel
Showing results for
Did you mean:
cancel
Showing results for
Did you mean:

SOLVED
Highlighted
Alexandrite

Irrational Number and Solving Equation.

Hello everyone,

I have a question and wish learning. It's about "Irrational Number and Solving Equation".

Regards,

Loi,

Tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted

Re: Irrational Number and Solving Equation.

sqrt(x)-floor(sqrt(x)) is the non-integer part of sqrt(x). You know that is equal to the right hand side, or to sqrt(7)-2. So you can generate other solutions just be adding an integer to that number.

10 REPLIES 10
Highlighted

Re: Irrational Number and Solving Equation.

Your equation requires that the decimal part of sqrt(x) be equal to the expression on the right hand side. However, since there is nothing to specify what the integer part of sqrt(x) has to be, your equation has an infinite number of possible solutions.

Highlighted

Re: Irrational Number and Solving Equation.

Following up the suggestion, above. Checking with x=6; x=7; x=8. We have:

So x=7 is the one of the solutions. And the rests of the solutions are the question.

Regards,

Loi.

Highlighted

Re: Irrational Number and Solving Equation.

sqrt(x)-floor(sqrt(x)) is the non-integer part of sqrt(x). You know that is equal to the right hand side, or to sqrt(7)-2. So you can generate other solutions just be adding an integer to that number.

Highlighted

Re: Irrational Number and Solving Equation.

I got it. Many, many thanks, Richard. And I have one more related question in "Mathcad Usage". Is there a press button, doing the following:

transpose --->

Regards,

Loi.

Highlighted

Re: Irrational Number and Solving Equation.

No, sorry. You can go from the one on the right to the one on the left just by evaluating symbolically, but I don't think there is a way to reverse it.

Highlighted

Re: Irrational Number and Solving Equation.

Thanks again, Richard.

Best regards,

Loi.

Highlighted

Re: Irrational Number and Solving Equation.

Just a bit more (all in version 11.2)

Highlighted

Re: Irrational Number and Solving Equation.

I greatly appreciate your help, Steen. I have comprehended that as the following:

Many thanks, Steen.

Regards,

Loi.

Highlighted

Re: Irrational Number and Solving Equation.

 So x=7 is the one of the solutions. And the rests of the solutions are the question.

Is that you sending love to Richard????

Mike

Re: Irrational Number and Solving Equation.

Sorry, Mike. It's a half due to my English and a half due to accidentally hit key.

Thanks for reminding me.

Regards,

Loi.

Announcements