设函数f(x)在区间[-2,2]上可导,且f′(x)>f(x)>0,则()。 A: f(-2)/f(-1)>1 B: f(0)/f(-1)>e C: f(1)/f(-1)<e<sup>2</sup> D: f(2)/f(-1)<e<sup>2</sup>
设函数f(x)在区间[-2,2]上可导,且f′(x)>f(x)>0,则()。 A: f(-2)/f(-1)>1 B: f(0)/f(-1)>e C: f(1)/f(-1)<e<sup>2</sup> D: f(2)/f(-1)<e<sup>2</sup>
f(x)=xln2x在x0处可导,f'(x0)=2, 则f(x0)=( ) A: 1 B: e/2 C: 2/e D: e^2
f(x)=xln2x在x0处可导,f'(x0)=2, 则f(x0)=( ) A: 1 B: e/2 C: 2/e D: e^2
多面体的欧拉公式是: A: V–F + E = 2 B: V–F–E = 2 C: V + F–E = 2 D: V + F–E = 1
多面体的欧拉公式是: A: V–F + E = 2 B: V–F–E = 2 C: V + F–E = 2 D: V + F–E = 1
设a=﹣(﹣2)2,b=﹣(﹣3)3,c=﹣(﹣42),则﹣[a﹣(b﹣c)]= A: 15 B: 7 C: ﹣39 D: 47
设a=﹣(﹣2)2,b=﹣(﹣3)3,c=﹣(﹣42),则﹣[a﹣(b﹣c)]= A: 15 B: 7 C: ﹣39 D: 47
f(x)=x2+bx+c,x∈R,有f(2+x)=f(2-x),则( ) A: f(1)<f(2)<f(4) B: f(2)<f(4)<f(1) C: f(4)<f(2)<f(1) D: f(2)<f(1)<f(4) E: f(1)<f(4)<f(2)
f(x)=x2+bx+c,x∈R,有f(2+x)=f(2-x),则( ) A: f(1)<f(2)<f(4) B: f(2)<f(4)<f(1) C: f(4)<f(2)<f(1) D: f(2)<f(1)<f(4) E: f(1)<f(4)<f(2)
Given:11. int i = 0, j = 1;12. if ((i++ == 1)&& (j++ == 2)) {13. i = 42;14. }15.System.out.println("i = " + i + ", j = " + j); A: i = 1, j = 2 B: i = 1, j = 1 C: i = 42, j = 2 D: i = 42, j = 1 E: Compilation fails.
Given:11. int i = 0, j = 1;12. if ((i++ == 1)&& (j++ == 2)) {13. i = 42;14. }15.System.out.println("i = " + i + ", j = " + j); A: i = 1, j = 2 B: i = 1, j = 1 C: i = 42, j = 2 D: i = 42, j = 1 E: Compilation fails.
设a=-(-2)2,b=-(-3)3,c=-(-42),则-[a-(b-c)]=( ) A: 15 B: 7 C: -39 D: 47
设a=-(-2)2,b=-(-3)3,c=-(-42),则-[a-(b-c)]=( ) A: 15 B: 7 C: -39 D: 47
下列( )是日期常量。 A: “2/1/18” B: 2/1/18 C: D: 1/2/18 E: F: {2/1/18}
下列( )是日期常量。 A: “2/1/18” B: 2/1/18 C: D: 1/2/18 E: F: {2/1/18}
列竖式计算.42÷七=2得÷4=47÷8=
列竖式计算.42÷七=2得÷4=47÷8=
【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)
【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)