MATLAB: How to write this equation

matlab functionstateflow

what's the mistake with my code

T=linspace(100,1,10)
mu    = @(T)  0.001.*(0.2414.*10.^(247.8./((T-273)+68.12963)));
Error: Unexpected MATLAB expression.

please help me

Best Answer

Its OK, no error

T=linspace(100,1,10) 
mu=(0.001.*(0.2414.*10.^(247.8./((T-273)+68.12963))))

Related Solutions

MATLAB: I have an array of data from a sensor which varies from positive to negative continuously. I want to find the peak value of each set of positive numbers and negative numbers.

>> findpeaks(X(X>0))
ans =
  Columns 1 through 10
    4.5190    4.5260    3.3360    3.1910    2.4630    1.8080    1.7910    1.3260    1.0030    0.7530
  Columns 11 through 20
    0.5650    0.4140    0.3060    0.3030    0.2290    0.2280    0.1710    0.1710    0.1300    0.1180
  Columns 21 through 30
    0.0980    0.0740    0.0520    0.0540    0.0410    0.0410    0.0320    0.0250    0.0190    0.0200
  Columns 31 through 40
    0.0020    0.0150    0.0150    0.0150    0.0110    0.0110    0.0110    0.0110    0.0070    0.0080
  Columns 41 through 50
    0.0090    0.0090    0.0090    0.0020    0.0040    0.0070    0.0020    0.0030    0.0030    0.0040
  Columns 51 through 59
    0.0050    0.0020    0.0020    0.0030    0.0030    0.0030    0.0030    0.0020    0.0020
>> abs(findpeaks(-X(X<0)))
ans =
  Columns 1 through 10
    3.8980    3.7790    2.8760    2.1120    2.1030    1.5570    1.5540    1.1540    0.8550    0.6340
  Columns 11 through 20
    0.4610    0.4700    0.3490    0.2600    0.1950    0.1450    0.1090    0.0790    0.0810    0.0590
  Columns 21 through 30
    0.0600    0.0600    0.0450    0.0450    0.0340    0.0270    0.0270    0.0200    0.0150    0.0150
  Columns 31 through 40
    0.0150    0.0100    0.0030    0.0100    0.0100    0.0100    0.0020    0.0060    0.0060    0.0060
  Columns 41 through 50
    0.0060    0.0050    0.0040    0.0020    0.0040    0.0040    0.0040    0.0040    0.0020    0.0020
  Columns 51 through 60
    0.0020    0.0020    0.0030    0.0030    0.0020    0.0020    0.0020    0.0020    0.0020    0.0020
  Columns 61 through 64
    0.0020    0.0020    0.0020    0.0020
>>

findpeaks is in Signal Processing Toolbox...

MATLAB: Issue with creating a plot from two for loops

Neither of the loops are necessary. Use element-wise operations (here, exponentiation (.^ instead of ^) and division (./ instead of /)) to create the plots:

a=1.63279*10^-6;
b=264.9889;
T=373:10:1273;
Mu = (a*T.^0.5)./(1+b./T);
figure
plot(T, Mu)
grid
n = 0.666;
T0 = 273;
Mu0 = 1.375*10^-5;
T=373:10:1273;
MuT = Mu0.*(T./T0).^n;
figure
plot(T, MuT)
grid

See the documentation on Array vs. Matrix Operations for a full explanation.

Best Answer

Related Solutions

MATLAB: I have an array of data from a sensor which varies from positive to negative continuously. I want to find the peak value of each set of positive numbers and negative numbers.

MATLAB: Issue with creating a plot from two for loops

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