matlab数学实验1

x=1:2:9

x =

 1     3     5     7     9

a=linspace(-1,1,30)

a =

1 至 11 列

-1.0000 -0.9310 -0.8621 -0.7931 -0.7241 -0.6552 -0.5862 -0.5172 -0.4483 -0.3793 -0.3103

12 至 22 列

-0.2414 -0.1724 -0.1034 -0.0345 0.0345 0.1034 0.1724 0.2414 0.3103 0.3793 0.4483

23 至 30 列

0.5172    0.5862    0.6552    0.7241    0.7931    0.8621    0.9310    1.0000

b=2*a.^2

b =

1 至 11 列

2.0000    1.7337    1.4863    1.2580    1.0488    0.8585    0.6873    0.5351    0.4019    0.2878    0.1926

12 至 22 列

0.1165    0.0595    0.0214    0.0024    0.0024    0.0214    0.0595    0.1165    0.1926    0.2878    0.4019

23 至 30 列

0.5351    0.6873    0.8585    1.0488    1.2580    1.4863    1.7337    2.0000

A=[1 2 3
4 5 6]

A =

 1     2     3 4     5     6

x=linspace(0,pi,11)

x =

     0    0.3142    0.6283    0.9425    1.2566    1.5708    1.8850    2.1991    2.5133    2.8274    3.1416

*>> x=zero(5,6)
未定义与 ‘double’ 类型的输入参数相对应的函数 ‘zero’。

x=zeros(5,6)*

x =

 0     0     0     0     0     0 0     0     0     0     0     0 0     0     0     0     0     0 0     0     0     0     0     0 0     0     0     0     0     0

u=(1:3;
u=(1:3;
|
错误: 圆括号或方括号不对称或异常。

是不是想输入:

u=(1:3);
u=[1:3;
4:6
7:9
]

u =

 1     2     3 4     5     6 7     8     9

u(4,;0=[10:12]
u(4,;0=[10:12]
|
错误: 圆括号或方括号不对称或异常。

u(4,;0)=[10:12]
u(4,;0)=[10:12]
|
错误: 圆括号或方括号不对称或异常。

u(4,;)=[10,11,12]
u(4,;)=[10,11,12]
|
错误: 圆括号或方括号不对称或异常。

u(4,:)=[10,11,12]

u =

 1     2     3 4     5     6 7     8     910    11    12

u(4,:)=[1,1,1]

u =

 1     2     3 4     5     6 7     8     9 1     1     1

u(:,4)=[1,1,1]
带有下标的赋值维度不匹配。

u(:,4)=[1,1,1,1]

u =

 1     2     3     1 4     5     6     1 7     8     9     1 1     1     1     1

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shared\sldv - sldvisactive - Check if Simulink Design Verifier software is analyzing model
shared\slvnv - (没有目录文件)
slvnv\slvnv - Simulink Verification and Validation
slvnv\simcoverage - Simulink Model Coverage Tool
shared\spcuilib - (没有目录文件)
shared\statslib - Statistics Toolbox Library
testmeaslib\simulink - (没有目录文件)
tlmgenerator\foundation - (没有目录文件)
foundation\tlmgeneratordemos - (没有目录文件)
shared\xcp - XCP functionality is provided as part of Vehicle Network Toolbox.
xcp\xcpblks - (没有目录文件)
xcp\xcpmasks - (没有目录文件)
xcp\xcpmex - (没有目录文件)
signal\signal - Signal Processing Toolbox
signal\sigtools - (没有目录文件)
signal\sptoolgui - (没有目录文件)
signal\sigdemos - (没有目录文件)
simbio\simbio - SimBiology
simbio\simbiodemos - SimBiology Demos
simevents\simevents - SimEvents
des\desblks - (没有目录文件)
des\desmasks - (没有目录文件)
des\desmex - (没有目录文件)
simevents\examples - SimEvents Demos.
simrf\simrf - SimRF
simrf\simrfV2 - (没有目录文件)
simrf\simrfV2masks - (没有目录文件)
simrf\simrfV2demos - SimRF 4.3 Demos
simrf\examples - (没有目录文件)
sl3d\sl3d - Simulink 3D Animation
sl3d\sl3ddemos - Simulink 3D Animation examples.
slci\slci - Simulink Code Inspector
slci\slcidemos - (没有目录文件)
slcontrol\slcontrol - Simulink Control Design
slcontrol\slctrlguis - (没有目录文件)
slcontrol\slctrlutil - (没有目录文件)
slcontrol\slctrlobsolete - (没有目录文件)
slcontrol\slctrldemos - (没有目录文件)
sldo\sldo - Simulink Design Optimization
sldo\sldoguis - (没有目录文件)
sloptim\sloptim - (没有目录文件)
sloptim\sloptguis - (没有目录文件)
sloptim\sloptobsolete - (没有目录文件)
slestim\slestguis - (没有目录文件)
slestim\slestim - (没有目录文件)
slestim\slestmex - Simulink Design Optimization Estimation S-Function MEX-files.
slestim\slestutil - (没有目录文件)
sldo\sldodemos - Simulink Design Optimization Demos.
sldodemos\optim - (没有目录文件)
sldodemos\estim - (没有目录文件)
sldo\examples - (没有目录文件)
sldv\slicer - (没有目录文件)
slicer\gui - (没有目录文件)
sldv\sldv - Simulink Design Verifier
sldv\sldvdemos - (没有目录文件)
slproject\examples - (没有目录文件)
slreportgen\webview - (没有目录文件)
slrt\slrt - Simulink Real-Time
slrt\blocks - (没有目录文件)
blocks\protocols - (没有目录文件)
blocks\displaylogging - (没有目录文件)
slrt\slrtexamples - (没有目录文件)
slvnv\slvnvdemos - (没有目录文件)
slvnv\rmidemos - (没有目录文件)
slvnv\simcovdemos - (没有目录文件)
slvnv\do178b - (没有目录文件)
slvnv\iec61508 - Modeling Style Guide checks for IEC61508
slvnv\styleguide - (没有目录文件)
simulink\sl_async_streaming - (没有目录文件)
simulink\fixedandfloat - Fixed-Point Designer utilities.
fixedandfloat\obsolete - (没有目录文件)
iodata\iomap - (没有目录文件)
performance\performancea - (没有目录文件)
simharness\simharness - (没有目录文件)
simulink\upgradeadvisor - (没有目录文件)
stats\stats - Statistics Toolbox
stats\classreg - (没有目录文件)
stats\clustering - (没有目录文件)
stats\statsdemos - Statistics Toolbox — Demos
symbolic\symbolic - Symbolic Math Toolbox
symbolic\symbolicdemos - (没有目录文件)
systemtest\systemtest - SystemTest
systemtest\systemtestdemos - SystemTest demonstrations and examples.
target\codertarget - (没有目录文件)
intelhost\tfl - (没有目录文件)
foundation\utils - (没有目录文件)
utils\resource_config - (没有目录文件)
blks\mex - (没有目录文件)
blks\masks - (没有目录文件)
ti\mdlinfo - (没有目录文件)
ti\utils - (没有目录文件)
blks\masks - (没有目录文件)
etargets\etargets - (没有目录文件)
etargets\demoutils - (没有目录文件)
target\targetdemos - (没有目录文件)
processor\tic2000 - (没有目录文件)
tic2000\utils - (没有目录文件)
blks\masks - (没有目录文件)
tic5000\tic5000demos - (没有目录文件)
processor\tic6000 - (没有目录文件)
tic6000\tfl - (没有目录文件)
tic6000\utils - (没有目录文件)
blks\masks - (没有目录文件)
blks\mex - (没有目录文件)
blks\masks - (没有目录文件)
matlab\timeseries - Time series data visualization and exploration.
matlab\hds - (没有目录文件)
matlab\toolbox_packaging - (没有目录文件)
trading\trading - Trading Toolbox
trading\tradingdemos - (没有目录文件)
lte\umts - LTE System Toolbox
vision\vision - Computer Vision System Toolbox
vision\visionutilities - (没有目录文件)
visionutilities\visioninit - (没有目录文件)
visionutilities\visionmex - (没有目录文件)
vnt\vnt - Vehicle Network Toolbox
vnt\vntguis - (没有目录文件)
vntblks\vntblks - (没有目录文件)
vntblks\vntmasks - (没有目录文件)
vnt\vntdemos - (没有目录文件)
wavelet\wavelet - Wavelet Toolbox
wavelet\wmultisig1d - (没有目录文件)
wavelet\compression - (没有目录文件)
wavelet\wavedemo - (没有目录文件)
matlab\webcam - Webcam support.
webservices\restful - (没有目录文件)
interfaces\webservices - Web services interface.
xpc\xpc - (没有目录文件)
xpcblocks\thirdpartydrivers - (没有目录文件)
build\xpcblocks - (没有目录文件)
build\xpcobsolete - (没有目录文件)
xpc\xpcdemos - (没有目录文件)

Elementary math functions.

Trigonometric.
sin - Sine.
sind - Sine of argument in degrees.
sinh - Hyperbolic sine.
asin - Inverse sine.
asind - Inverse sine, result in degrees.
asinh - Inverse hyperbolic sine.
cos - Cosine.
cosd - Cosine of argument in degrees.
cosh - Hyperbolic cosine.
acos - Inverse cosine.
acosd - Inverse cosine, result in degrees.
acosh - Inverse hyperbolic cosine.
tan - Tangent.
tand - Tangent of argument in degrees.
tanh - Hyperbolic tangent.
atan - Inverse tangent.
atand - Inverse tangent, result in degrees.
atan2 - Four quadrant inverse tangent.
atan2d - Four quadrant inverse tangent, result in degrees.
atanh - Inverse hyperbolic tangent.
sec - Secant.
secd - Secant of argument in degrees.
sech - Hyperbolic secant.
asec - Inverse secant.
asecd - Inverse secant, result in degrees.
asech - Inverse hyperbolic secant.
csc - Cosecant.
cscd - Cosecant of argument in degrees.
csch - Hyperbolic cosecant.
acsc - Inverse cosecant.
acscd - Inverse cosecant, result in degrees.
acsch - Inverse hyperbolic cosecant.
cot - Cotangent.
cotd - Cotangent of argument in degrees.
coth - Hyperbolic cotangent.
acot - Inverse cotangent.
acotd - Inverse cotangent, result in degrees.
acoth - Inverse hyperbolic cotangent.
hypot - Square root of sum of squares.

Exponential.
exp - Exponential.
expm1 - Compute exp(x)-1 accurately.
log - Natural logarithm.
log1p - Compute log(1+x) accurately.
log10 - Common (base 10) logarithm.
log2 - Base 2 logarithm and dissect floating point number.
pow2 - Base 2 power and scale floating point number.
realpow - Power that will error out on complex result.
reallog - Natural logarithm of real number.
realsqrt - Square root of number greater than or equal to zero.
sqrt - Square root.
nthroot - Real n-th root of real numbers.
nextpow2 - Next higher power of 2.

Complex.
abs - Absolute value.
angle - Phase angle.
complex - Construct complex data from real and imaginary parts.
conj - Complex conjugate.
imag - Complex imaginary part.
real - Complex real part.
unwrap - Unwrap phase angle.
isreal - True for real array.
cplxpair - Sort numbers into complex conjugate pairs.

Rounding and remainder.
fix - Round towards zero.
floor - Round towards minus infinity.
ceil - Round towards plus infinity.
round - Round towards nearest integer.
mod - Modulus (signed remainder after division).
rem - Remainder after division.
sign - Signum.

a=[1 2 3
4 5 6];sin(a)

ans =

0.8415    0.9093    0.1411

-0.7568 -0.9589 -0.2794