20/20 Rational Expressions [iPhone]

Walter Kissachが配信するiPhoneアプリ「20/20 Rational Expressions」の評価や口コミやランキング推移情報です。このアプリには「教育」「辞書/辞典/その他」などのジャンルで分類しています。APPLIONでは「20/20 Rational Expressions」の他にもあなたにおすすめのアプリのレビューやみんなの評価や世界ランキングなどから探すことができます。

20/20 Rational Expressions

Walter Kissach ￥100 iPhone / iPad対応教育辞書/辞典/その他 64bit

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Walter Kissachのエデュケーションアプリ

「20/20 Rational Expressions」は、Walter Kissachが配信するエデュケーションアプリです。

教育辞書/辞典/その他

このアプリの話題とニュース

新バージョン8.6が配信開始。新機能や改善アップデートがされています。(4/10)
2009年3月7日(土)にiPhoneとiPad両対応のユニバーサルアプリとしてリリース！

使い方や遊び方

A power learning aid combines Guides, Practice and Coaching Calculators to help students master rational expression or rational fraction simplification and rational equation solving.

Rational expression Practice and Coaching Calculators take you step-by-step through the simplification of expressions such as :

(6x³ + 7x² - 1)/(2x² + 3x + 1)
(x² + 6x + 8)/(x + 2)
(x² - 5x + 6)/(14 + 3x - 5x²)
(3x - 9)/(6x - 12)

Detailed steps :

- Factoring out numeric or algebraic factors
- Factoring linear numerators/denominators
- Factoring quadratic numerators/denominators
- Factoring cubic numerators/denominators
- Dividing out or canceling common factors

Rational equation Practice takes you step-by-step through the solving of equations such as :

(5x + 3)/4 + (1 + 3x)/5 = 4/5
2/(3x²) + 5/x = 3/(4x)
1/(3x + 6) - 3/(5x² + 8x - 4) = -5/(15x - 6)
(2x - 1)/(3x + 2) - (1 - x)/(6x² + 7x - 2) = 7/20

Detailed steps :

- Factoring denominators
- Finding Least Common Denominator (LCD)
- Multiplying through by LCD or making each term have LCD
- Solving resulting linear or quadratic equation

The Guide also covers the addition and subtraction of rational expressions such as

3/(x + 1) + 2x/(x² - 6x - 7)

and the multiplication and division of rational expressions such as

(x² - 1)/(9x² - 1) * (6x + 2)/(3x² - 3x).