您現(xiàn)在的位置:首頁(yè) - GRE - 答疑

GRE考試數(shù)學(xué)考點(diǎn)講解

2024-08-27 13:57:22 來(lái)源:中國(guó)教育在線

最新GRE考試數(shù)學(xué)考點(diǎn)講解,很多同學(xué)對(duì)于這個(gè)問(wèn)題有疑問(wèn)和不解,那么下面就跟著中國(guó)教育在線的小編詳細(xì)了解一下吧。

最新GRE考試數(shù)學(xué)考點(diǎn)講解

To solve a linear equation isolate the variable, that is bring the variable to one side with arithmetic operations.

Example:

To solve ax+b=c use the following steps:

1.ax+b=c, subtract b from both sides.

2.ax=c-b, divide both sides by a

3.x=(c-b)/a

Remember:

All linear equations of one variable can be written as ax+b=c and the solution is x=(c-b)/a.

GRE考試數(shù)學(xué)考點(diǎn):Substitution

Substitution

Substitution is a method where one or more variables in an expression is replaced by numbers or another set of variables.To evaluate an expression specific numbers are used as substitute. To express in terms of another set of variables, variables are replaced by the new set of variables.

Example:

If x=3, then 2x2+4x+1 can be evaluated by substituting 3 for x.

Replacing all x by 3, we get 2*32+4*3+1=31.

If x=2+y, then x2-3 can be expressed in terms of y by replacing all x by (2+y):(2+y)2-3=y2+4y+1.

Remember:

Do not forget to replace all occurrences of the variable.

After substitution the variable does not appear anywhere in the expression.

以上,就是本文的全部?jī)?nèi)容分享,希望能給同學(xué)們帶來(lái)參考,如果您還有最新GRE考試數(shù)學(xué)考點(diǎn)講解其他方面的疑問(wèn),歡迎隨時(shí)在線咨詢客服老師。

>> 雅思 托福 免費(fèi)測(cè)試、量身規(guī)劃、讓英語(yǔ)學(xué)習(xí)不再困難<<

- 聲明 -

(一)由于考試政策等各方面情況的不斷調(diào)整與變化,本網(wǎng)站所提供的考試信息僅供參考,請(qǐng)以權(quán)威部門(mén)公布的正式信息為準(zhǔn)。

(二)本網(wǎng)站在文章內(nèi)容出處標(biāo)注為其他平臺(tái)的稿件均為轉(zhuǎn)載稿,轉(zhuǎn)載出于非商業(yè)性學(xué)習(xí)目的,歸原作者所有。如您對(duì)內(nèi)容、版 權(quán)等問(wèn)題存在異議請(qǐng)與本站,會(huì)及時(shí)進(jìn)行處理解決。

語(yǔ)言考試咨詢
HOT
培訓(xùn)費(fèi)用測(cè)算
英語(yǔ)水平測(cè)試
1
免費(fèi)在線咨詢
免費(fèi)獲取留學(xué)方案