题型三 立方根的性质【例3】若图$$ \sqrt [ 3 ] { 3 x - 7 } $$面和,的$$ \sqrt [ 3 ] { 3 y + 4 } $$(互为相反
【解析】【答案】 (1)x=2;(2)x=3;(3)x=4;(4)x=-4; (5)x=3;(6)x=7;(7)x= 【解析】 (1)2x+√x-1=5 移项得√x-1=5-2x 两边同时平方得x-1=25-20x+4x2 移项并合并同类项得4x2-21x+26=0 分解因式得(4x-13)(x-2)=0 可得x1=13,22=2 代入方程式,经验证2× 13+...
Explanation: First, recognize that you are looking at the cube root of (6x+7) , which can be rewritten as (6x+7)31 ... How do you solve 9=3x ? https://socratic.org/questions/how-do-you-solve-9-sqrt-3x x=27 Explanation: 9=3x Square both sides, 81=3x Divide both sides by 3...
(1)/(3x+4) का समाकलन कीजिये - 01:36 (-1)/(1+(2x - 5)^(2)) का समाकलन कीजिये - 01:58 (1)/(sqrt(1-(3x - 7)^(2))) का समाकलन कीजिये - 02:02 cosx^(@...
百度试题 结果1 题目已知:left | (x+2y) right |+sqrt (3x-7)+left ( (5y+z) right )^2=0,求x-3y+4z的值.相关知识点: 试题来源: 解析反馈 收藏
【解析】k-√3x+7-6=0, ∴.√3x+7=k-6, 方程k-√3x+7-6=0没有实数根, .k-60, ∴.k6, 即k的取值范围是:k6. 故答案为:k6.【无理方程的定义】无理方程:方程中含有根式,且开方数是含有未知数的代数式,这样的方程叫做无理方程.【代数方程的分类】有理方程和根式方程(无理方程)合称...
Answer to: Solve for x if \sqrt{3x+7} + 2 = \sqrt{7x + 15}. By signing up, you'll get thousands of step-by-step solutions to your...
Evaluate:(Lim)x→4√2x+1+√x−3−4√(3x+4)+√5x+5−9 View Solution Evaluate the following limit:(lim)x→±∞(√x2−2x−1−√x2−7x−3) View Solution Evaluatelimx→0√1+x3−√1−x3x2 View Solution Evaluate:(lim)x→∞x3{√x2+√1+x4−x√2} ...
Answer to: Evaluate: \sqrt{ x + 7} = x + 1 By signing up, you'll get thousands of step-by-step solutions to your homework questions. You can also...
这篇文章的起因是观察到了来自于 @酱紫君 回答的一些不定积分。然后翻草稿箱翻到了... \displaystyle\int{\sqrt{1+x^n}\mathrm{d}x}\tag{1}\\ 先切(指切比雪夫判定)一下,切成 \frac{2}{n},1 ,n为整数。 当 n>…