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Simultaneous

Simultaneous
  • #: 161577
  • Price: $0.99 In Apple Store
  • Category: Education
  • Updated: 2016-09-13
  • Current Version: 4.0
  • 4.0
  • Size: 0.60 MB
  • Language: English
  • Seller: Walter Kissach
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 4.0 or later.
  • © 2010 Walter Kissach
  •  Add to Favorite apps

 

Description

Simultaneous Equations combines interactive Coaching Calculators and Guides to take you step-by-step through the solving of a pair of simultaneous linear equations.

The app features the addition method, the elimination method and the substitution method.

Coefficients can be nonzero integers from -99 to 99 inclusive.

You develop skills quickly as you work with the calculator and see each step of the process in detail :

Addition method :

- Choose which variable to eliminate

- Decide how to make its coefficients opposites

- Manipulate equations to make its coefficients opposites

- Eliminate the variable by adding the equations

- Solve resulting equation for the other variable

- Back substitute into an original equation

Elimination method :

- Choose which variable to eliminate

- Decide how to make its coefficients the same (absolute value)

- Manipulate equations appropriately

- Eliminate the variable by adding/subtracting equations

- Solve resulting equation for the other variable

- Back substitute into an original equation

Substitution method :

The steps if you start by solving first equation to express x in terms of y are shown here.

- Solve first equation to express x in terms of y

- Substitute x in second equation and solve for y

- Substitute y solution back into rearranged first equation

- Solve resulting equation for x

Note that the Coaching Calculator shows the steps if you start by solving x or y from either equation.

What's New in Version 4.0

iOS 10 compatibility and bug fixes.

iPhone Screenshots

Simultaneous iPhone Screenshot 1
Simultaneous iPhone Screenshot 2
Simultaneous iPhone Screenshot 3
Simultaneous iPhone Screenshot 4
Simultaneous iPhone Screenshot 5

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The information may be outdated (2017-03-08 09:09:15). For actual information go to iTunes

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