5个2.在代数式2x^{2}y,-5b^{2},\frac{2}{3x},0,5x^{2}-\frac{1}{6}y^{3},\frac{1}{{\pi}}(m+n)^{2},\frac{x+3}{3},y^{2}+6y+9中,整式的个数是( ). 5 6 7 8 相关知识点: 试题来源: 解析 1. C. 4 个 2. C. 7 个 1. 单项式个数 根据单项式的定义...
相关知识点: 试题来源: 解析 解:(1)∵12(2-3x)=4x+4,∴24-36x=4x+4,∴-40x=-20,∴x=\(\frac{1}{2}\).(2)∵\(\frac{x-3}{2}\)-\(\frac{2x-1}{3}\)=1,∴3x-9-4x-2=6,∴-x=17,∴x=-17反馈 收藏
f(x) = \frac{4e^x - 4 - 4x}{x^2}, x = 1, 0.5, 0.1, 0.05, 0.01, -1, -0.5, -0.1, -0.05, -0.01 (1) Evaluate the function f(x) at the given numbers (correct to six decimal places): f(x) = x^2 - 3x/x^2 ...
Evaluate the limit: \lim_{x \rightarrow 0} \frac{\sin 3x}{5x^2 - 4x}. Evaluate the limit: \lim_{x \to 0} (\sqrt(x) ln(14x)) Evaluate the limit \lim_{x \rightarrow 8} (1 + \sqrt[3]x )(4 - 5x^2 + x^3)
Differentiate the function f ( x ) = 4 e x + 4 e ? x e x ? e ? x Differentiate the function. y = 1 \over \ln x Differentiate the function. g(x) = 1/(3x^3 + 5x + 2)^(3/4) Differentiate the function. g(x) = 6x^(-3) (x^4 - 6x^3 + 12x - 6...
(2)x+3/4x=357x=35x=35*4/7x=20(3)2/3x-1/2x=7/6(4/6-3/6)x=7/6x=7/6*6x=7(4)2/3x+1/4x-3=8(8/(12)+3/(12))x=8+3x=11*(12)/(11)x=12(5)3/7x+1/4x=(19)/5((12)/(28)+7/(28))x=(19)/5x=(19)/5*(28)/(19)x=(28)/5(6)x-5/6x=2...
Question: Calculate the limit. {eq}\displaystyle \lim_{x \to 2} \frac{x^2-7x+10}{4x^2-5x-6} {/eq} Factoring in a Limit: Factoring in a limit is performed if there is a common factor, which when canceled out, gives us the solution to the limit as an indetermin...
解答 解:(1)去括号得:4-x=2-6+3x,移项合并得:4x=8,解得:x=2;(2)去分母得:2x+6-1-x=8,移项合并得:x=3;(3)去括号得:3232x-110110(x+1)-1=x,去分母得:30x-2x-2-20=20x,移项合并得:8x=22,解得:x=114114;(4)方程整理得:18−80x1218−80x12-13−3x213−3x2-5x−435x...
两边同时乘以(x+2),得3x^2-12=2x(x+2),去括号移项,得x^2-4x-12=0,即(x-6)(x+2)=0,解得x=6或-2,检验:当x=6时,x+2=8\not=0;当x=-2时,x+2=0,则x=-2是原方程的增根,所以x=6是原方程的解。 本题主要考查分式方程及其解法。 解分式方程的基本步骤是:先去分母,去括号,移项、合并同...
Answer to: Find where G(x) = \frac{x^2 - 8}{x + 3} is increasing and decreasing. By signing up, you'll get thousands of step-by-step solutions to...