#### Areti Kassi

##### New member

- Joined
- Sep 2, 2021

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- 4

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- Thread starter Areti Kassi
- Start date

- Joined
- Sep 2, 2021

- Messages
- 4

- Joined
- Oct 6, 2005

- Messages
- 10,552

Welcome to our tutoring boards! :) This page summarizes some main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We prefer to help by having a...

www.freemathhelp.com

Please share your steps that resulted in 4,66. Thank you!

- Joined
- Jun 18, 2007

- Messages
- 25,219

While calculating sin(x), the value of 'x' is in radians (not degrees). More specifically, if you are calculating "this" with a calculator, make sure it is in "radian" mode.How do I calculate y(0.3) with the method Runge-Kutta 4th order when 3dy/dx +xy^2= sinx, y(0) =5 and h=0.3?

I get 4,66 but the possible answers are

1. 0.88

2. - 0.05

3. - 3,61

4. - 7,25*10^8View attachment 28742

- Joined
- Sep 2, 2021

- Messages
- 4

Thanks for the advice but I think I did that correctly because I used Google for the sinx and it automatically is in radian modeWhile calculating sin(x), the value of 'x' is in radians (not degrees). More specifically, if you are calculating "this" with a calculator, make sure it is in "radian" mode.

- Joined
- Oct 6, 2005

- Messages
- 10,552

Please share your steps that resulted in 4,66. Thank you!