已知[img=52x29]18038be96ed0534.png[/img],[img=115x51]18038be97866e95.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
已知[img=52x29]18038be96ed0534.png[/img],[img=115x51]18038be97866e95.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
已知[img=52x29]1802e9891f49f72.png[/img],[img=115x51]1802e989277fcbc.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
已知[img=52x29]1802e9891f49f72.png[/img],[img=115x51]1802e989277fcbc.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
已知[img=52x29]1803bbd8531a1be.png[/img],[img=115x51]1803bbd85b65619.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
已知[img=52x29]1803bbd8531a1be.png[/img],[img=115x51]1803bbd85b65619.png[/img],在MATLAB中若想由x生成矩阵A可调用命令 A: A=[x,x.^2,x.^3] B: A=[x,x^2,x^3] C: A=[x;x.^2;x.^3] D: A=[x;x^2;x^3]
如下命令可以进行定积分[img=89x72]17e448c768368cc.png[/img]的计算(或近似计算)的是: A: x=1:0.001:2;y=x.*exp(-x.^2);trapz(x,y) B: quad('x.*exp(-x.^2)',1,2,10e-10) C: quad('x*exp(-x^2)',1,2,10e-6) D: syms x;double(int(x*exp(-x^2),x,1,2))
如下命令可以进行定积分[img=89x72]17e448c768368cc.png[/img]的计算(或近似计算)的是: A: x=1:0.001:2;y=x.*exp(-x.^2);trapz(x,y) B: quad('x.*exp(-x.^2)',1,2,10e-10) C: quad('x*exp(-x^2)',1,2,10e-6) D: syms x;double(int(x*exp(-x^2),x,1,2))
语句 x=-1:0.1:1; plot([x+i*exp(-x.^2); x+i*exp(-2*x.^2); x+i*exp(-4*x.^2)]’),绘制( )
语句 x=-1:0.1:1; plot([x+i*exp(-x.^2); x+i*exp(-2*x.^2); x+i*exp(-4*x.^2)]’),绘制( )
当x∈(0)时,证明tanx>x.
当x∈(0)时,证明tanx>x.
已知x=[1;2],A=[111;248],在Matlab中可由x生成A的命令为 A: A=[x,x^2,x^3] B: A=[x;x^2;x^3] C: A=[x;x^2;x^3] D: A=[x,x.^2,x.^3]
已知x=[1;2],A=[111;248],在Matlab中可由x生成A的命令为 A: A=[x,x^2,x^3] B: A=[x;x^2;x^3] C: A=[x;x^2;x^3] D: A=[x,x.^2,x.^3]
MATLAB计算序列x[n]的能量的语句错误的是 A: sum(x.*conj(x)) B: sum( abs(x) .^2 ) C: sum(x.^2 ) D: sum(real(x).^2+imag(x).^2 )
MATLAB计算序列x[n]的能量的语句错误的是 A: sum(x.*conj(x)) B: sum( abs(x) .^2 ) C: sum(x.^2 ) D: sum(real(x).^2+imag(x).^2 )
MATLAB中x=0:0.1:1,则下面指令正确的是( ) A: y=x^2+2x+1 B: y=x.^2+2x+1 C: y=x.^2+2*x+1 D: y=x*x+2*x+1
MATLAB中x=0:0.1:1,则下面指令正确的是( ) A: y=x^2+2x+1 B: y=x.^2+2x+1 C: y=x.^2+2*x+1 D: y=x*x+2*x+1
A rising foreign exchange rate for country X will: () A: Result in a rise in X’s RPI. B: Be likely to raise the employment level in X. C: Favor those holidaying in X from abroad. D: Ease inflationary pressures with X.
A rising foreign exchange rate for country X will: () A: Result in a rise in X’s RPI. B: Be likely to raise the employment level in X. C: Favor those holidaying in X from abroad. D: Ease inflationary pressures with X.