A: sqrt(7*sin(3+2*x)+exp(2)*log(3))
B: sqrt(7sin(3+2x)+exp(2)log(3))
C: sqr(7*sin(3+2*x)+e^2*log(3))
D: sqr(7sin(3+2x)+ e^2 log(3))
举一反三
- 用赋值语句给定x数据,计算[img=181x29]18031f69d890fe4.png[/img]对应的MATLAB表达式是( ) A: sqrt(7*sin(3+2*x)+exp(2)*log(3)) B: sqrt(7sin(3+2x)+exp(2)log(3)) C: sqrt(7*sin(3+2*x)+e^2*log(3)) D: sqrt(7sin(3+2x)+e^2log(3))
- 用赋值语句给定x的数据,计算[img=520x100]17da65a77d01074.png[/img]对应的matlab语句是( ). A: sqrt(6*tan(3+2*x)+exp(2)*log(3)) B: sqrt(6tan(3+2x)+exp(2)log(3)) C: sqr(6*tan(3+2*x)+exp(2)*log(3)) D: sqr(6tan(3+2x)+exp(2)log(3))
- 数学式 A: (e^(2*x)*Log(x)+x^2)/Sqr(Abs(Sinx^2-Cos2x)) B: (Exp(2*x)*Log(x)+x^2)/Sqr(Abs(Sin(x^2)-Cos(x)^2)) C: (Exp(2*x)*Ln(x)+x^2)/Sqr(Abs(Sin(x^2)-Cos(x)^2)) D: (e^(2*x)*Log(x)+x^2)/Sqr(Abs(Sin(x)^2-Cos(x)^2))
- 求微分方程 [img=635x61]17da6537085dd29.png[/img] 的特解; ( ) A: (3*sin(5*x))/exp(2*x) B: exp(2*x) C: (3*sin(5*x)) D: (3*cos(5*x))/exp(2*x)
- 求微分方程[img=634x60]17da653955cf9e7.png[/img]的特解。 ( ) A: sin(2*x)/3 - cos(x) - cos(x)/3 B: sin(2*x)/3 - cos(x) - sin(x)/3 C: cos(2*x)/3 - cos(x) - sin(x)/3 D: sin(2*x)/3 - sin(x) - sin(x)/3
内容
- 0
数学表达式的VB算术表达式为() A: Sqr(x*y^3)+Abs(Exp(x)+Sin(x)^3/(x-y)) B: Sqr(x*y^3)+Abs((Exp(x)+Sin(x)^3)/(x-y)) C: Sqr(x*y^3)+Abs(Exp(x)+Sin(x)^3/x-y) D: Sqr((x*y)^3)+Abs((Exp(x)+Sin(x)^3)/(x-y))
- 1
常微分方程[img=243x26]1802e4d57c1aad8.png[/img]的解为: A: exp(-x)*sin(3^(1/2)*x)*C2+exp(-x)*cos(3^(1/2)*x)*C1-1/4*cos(2*x),C1、C2为任意常数 B: exp(-2x)*cos(3^(1/2)*x)*C2+exp(-2x)*cos(3^(1/2)*x)*C1-1/4*sin(2*x),C1、C2为任意常数 C: exp(-3x)*sin(3^(1/2)*x)*C2+exp(-3x)*sin(3^(1/2)*x)*C1-1/4*sin(2*x),C1、C2为任意常数 D: exp(-4x)*sin(3^(1/2)*x)*C2-exp(-4x)*cos(3^(1/2)*x)*C1-1/4*cos(2*x),C1、C2为任意常数
- 2
求微分方程[img=364x55]17da65386dfd612.png[/img]的通解; ( ) A: - cos(2*x)*exp(x)*(x/4 - sin(4*x)/16) + C23*cos(2*x)*exp(x) + C24*sin(2*x)*exp(x) B: (3*sin(2*x)*exp(x))/32 - (sin(6*x)*exp(x))/32 - cos(2*x)*exp(x)*(x/4 - sin(4*x)/16) + C23*cos(2*x)*exp(x) + C24*sin(2*x)*exp(x) C: - sin(4*x)/16) + C23*cos(2*x)*exp(x) + C24*sin(2*x)*exp(x) D: (sin(6*x)*exp(x))/32 - cos(2*x)*exp(x)*(x/4 - sin(4*x)/16) + C23*cos(2*x)*exp(x) + C24*sin(2*x)*exp(x)
- 3
求微分方程[img=372x60]17da65376dc1787.jpg[/img]的通解。 ( ) A: C26*exp(3*x) + (x*exp(3*x)*(x + 1)^2)/2 + C27*x*exp(3*x) - (x^2*exp(3*x)*(2*x + 3))/6 B: C26*exp(3*x) + C27*x*exp(3*x) - (x^2*exp(3*x)*(2*x + 3))/6 C: C26*exp(3*x) + (x*exp(3*x)*(x + 1)^2)/2 D: C27*x*exp(3*x) - (x^2*exp(3*x)*(2*x + 3))/6
- 4
求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4