近五专升本试题及答案
一、单项选择题(每题2分,共10题)
1.函数\(y=\sqrt{x-1}\)的定义域是()
A.\(x\geq0\)B.\(x\geq1\)C.\(x\gt1\)D.\(x\gt0\)
2.下列极限值为1的是()
A.\(\lim\limits_{x\to0}\frac{\sinx}{x}\)B.\(\lim\limits_{x\to\infty}\frac{\sinx}{x}\)C.\(\lim\limits_{x\to0}x\sin\frac{1}{x}\)D.\(\lim\limits_{x\to\infty}x\sin\frac{1}{x}\)
3.曲线\(y=x^2+1\)在点\((1,2)\)处的切线斜率为()
A.1B.2C.3D.4
4.若\(f(x)\)的一个原函数是\(\sinx\),则\(f^\prime(x)\)=()
A.\(\sinx\)B.\(-\sinx\)C.\(\cosx\)D.\(-\cosx\)
5.\(\intxdx\)=()
A.\(\frac{1}{2}x^2+C\)B.\(x^2+C\)C.\(\frac{1}{3}x^3+C\)D.\(x^3+C\)
6.设\(A\)、\(B\)为\(n\)阶方阵,且\(AB=O\),则必有()
A.\(A=O\)或\(B=O\)B.\(|A|=0\)或\(|B|=0\)C.\(A+B=O\)D.\(|A|+|B|=0\)
7.向量组\(\alpha_1=(1,0,0)\),\(\alpha_2=(0,1,0)\),\(\alpha_3=(0,0,1)\)的秩为()
A.1B.2C.3D.0
8.已知事件\(A\)、\(B\)满足\(P(A)=0.5\),\(P(B)=0.6\),\(P(AB)=0.3\),则\(P(A\cupB)\)=()
A.0.8B.0.9C.0.7D.0.6
9.设随机变量\(X\)服从正态分布\(N(1,4)\),则\(P(X\leq1)\)=()
A.0.2B.0.3C.0.5D.0.7
10.下列级数中收敛的是()
A.\(\sum_{n=1}^{\infty}\frac{1}{n}\)B.\(\sum_{n=1}^{\infty}\frac{1}{n^2}\)C.\(\sum_{n=1}^{\infty}n\)D.\(\sum_{n=1}^{\infty}(-1)^n\)
答案:1.B2.A3.B4.D5.A6.B7.C8.A9.C10.B
二、多项选择题(每题2分,共10题)
1.下列函数中,是偶函数的有()
A.\(y=x^2\)B.\(y=\cosx\)C.\(y=\sinx\)D.\(y=e^x+e^{-x}\)
2.函数\(y=f(x)\)在点\(x_0\)处可导的充分条件有()
A.函数在\(x_0\)处连续B.左导数等于右导数
C.\(\lim\limits_{h\to0}\frac{f(x_0+h)-f(x_0)}{h}\)存在D.函数在\(x_0\)处有定义
3.下列积分值为0的有()
A.\(\int_{-a}^{a}x\sinxdx\)B.\(\int_{-a}^{a}x\cosxdx\)C.\(\int_{-a}^{a}x^3dx\)D.\(\int_{-a}^{a}x^2dx\)
4.对于\(n\)阶方阵\(A\),以下说法正确的是()
A.若\(A\)可逆,则\(|A|\neq0\)B.若\(|A|\neq0\),则\(A\)可逆
C.若\(A\)可逆,则\(A\)的秩为\(n\)D.若\(A\)的秩为\(n\),则\(A\)可逆
5.向量组\(\alpha_1,\alpha_2,\cdots,\alpha_s\)线性相关的充分条件有()
A.存在不全为零的数\(k_1,k_2,\cdots,k_s\),使得\(k_1\alpha_1+k_2\alpha_2+\cdot