5 years, 14 days

## How to specify ranges in FrequencyTable...

Maple 2019

Hi, I'm importing an Excel file then trying to feed it to FrequencyTable. While it works, it shows me some range intervals that seem to be calculated by the function. I would like to use a specific interval, but I can't find what parameter to use. Bins won't do the trick, since it doesn't let me specify the range.

## Getting invalid expression error when pl...

Maple 2019

Hi. I'm using the interactive plot builder. I click in add button in the expression section and then enter:

2x+y+2x-15=0

and click the accept button and I get an error message saying "Please enter a valid Maple expression". How am I supposed to enter the equation of the plane?

## How to use dsolve and diff together...

Maple 2019

Hi, I have the following simple differential equation.

2x dx -9y^2 dy = 0

How can I enter the command to solve it? I know I'm supposed to use dsolve command, but I keep getting an input error saying that it expected an ODE. Google says that said message is because for whatever reason Maple cannot understand dx or dy, and that instead I need to use diff command. But when I enter:

2x diff(x) - 9 y^2 diff(y) = 0

I get another error. I have tried other combinations, but at times I get errors like y(x) and y cannot both appear in the given ODE, which I don't understand why they can't as they are like basic run of the mill ODEs, so I'm a bit confused.

I have also checked Maple's docs but they don't help either, I tried the first example given here:
https://www.maplesoft.com/support/help/Maple/view.aspx?path=dsolve
and I got the same "expecting an ODE or a set or list of ODEs" as in my own examples, so I'm guessing the docs are assuming steps or some configuration.

How am I supposed to enter the command? Thanks in advance!

## IntTutor says unable to solve this probl...

Maple 2019

Hi, I ran the following command:

int(x^2 * sqrt(1-x^2), x)

and I got a solution. Then I try IntTutor:

IntTutor(x^2 * sqrt(1-x^2), x)

And a UI window popus, does nothing. When I click "All Steps" it says "Unable to solve this problem". How so, if int() just gave me an answer? Or am I using the commands wrong?

I'm trying to see the steps by step solution of the integral, so I can compare it with my attempts. Kinda like what http://integral-calculator.com/ does. Thanks in advance.

## Show ODE solution step by step...

Maple 2019

I'm using dsolve command to solve a differential equation. Using infolevel to 3 will tell me the classification of said DE. However, how can I see the step by step solution? I'm using Maple as a study tool so I do solve manually a DE then I'd like to compare my answer with Maple's. How can I acomplish this? Thanks in advance.

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