As you can see, the interface of this application is very clean and shows us the necessary commands to be able to solve quadratic equations.
We have the boxes to introduce the coefficients of the system to be solved and at the bottom the following commands:
- CLEAR: It will clear all the boxes of the coefficients.
- ACCEPT: To solve the equation that we have configured.
- AYUDA: Tutorial that will explain how to use the app.
HOW TO SOLVE EQUATIONS OF THE SECOND DEGREE:
It's easy to use, as you can see in the video below, since it doesn't have large options menus, it just does what it says but very well. In the initial screen you have to enter the 6 coefficients of the system and then press «Accept» .
These coefficients can be whole numbers, decimals and fractions, for example: 9, 0, -2, 3/5, 4.7, etc. If any illegal expression is entered, it will inform us of this and we will not be able to continue until all the coefficients are correct.
On the next screen there are only 3 buttons corresponding to the three resolution methods (SUBSTITUTE, MATCH and REDUCTION).
After clicking on each of them, the necessary steps to reach the solution will be displayed.
If the system is incompatible directly, the buttons are disabled and it is indicated.
If the system is indeterminate compatible and therefore has infinitely many solutions that can be expressed as a function of one parameter, the solution is also shown. In this case, the unknown "x" is resolved as a function of "y=t".
By default in this first version, the substitution method chooses the variable "x" from the first equation to solve first and then substitute in the second equation. In the case of the equalization method, the «x» in the two equations is also resolved by default. And in the case of the reduction method, the first equation is multiplied by the factor necessary to cancel the unknown "y".
Version 2 will be available in a few days where intelligence is provided to the application to avoid cases in which the coefficient of the variable "x" is zero and then it cannot be solved and it starts trying to solve the variable "and".It is possible that to obtain the factor that is needed in the reduction method, a division by zero results and then another factor must be found. All this will be resolved with the next version and all possibilities will be covered.
Also for future updates, the user will be given freedom to choose the way to proceed in each method.
Here is an illustrative video where you can see the steps on how to solve quadratic equations:
CONCLUSION:
A recommended application for mathematics students and teachers of the same subject. It is a luxury to be able to have this tool to self-correct when doing this type of equations. I wish we had had it when we were students.
