An error (Two different outputs for a single command)

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onsagerian
onsagerian 2018-7-9
评论： onsagerian 2018-7-10
Hello,
When I ran my simple program, there were two different outputs. (Only single value of "gamma" in this case are expected one but I had two values. I have no idea on this part. Would you answer me?
(I am attaching a part of my program)
format long e
C_0=0.1;
T=0.1;
k=2.0; %default value is 2.0
k_1=1.0; %k(-1) default value is 0.1 (modified: 1.0)
k_2=0.01; %k(-1*)
k_(1)=10; %k'(-1) default value is 10
k_(2)=1.0; %k'(-1*) default value is 1.0
a_p=0.0008; %k(p) default value is 0.0002
k_p=0.00001; %k(-p)
%theta=k_1/k_(1);
theta=k_2/k_(2);
m=0.0000005;
W=0.002;
gamma=(a_p*k*k_2)./(k_p*m*k_)

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per isakson
per isakson 2018-7-9
编辑：per isakson 2018-7-9
k_ is a row vector, which explains why gamma becomes a row vector
>> whos k_ gamma
Name Size Bytes Class Attributes
gamma 1x2 16 double
k_ 1x2 16 double
gamma is the name of a built-in function and thus should not be used as the name of a variable.
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onsagerian
onsagerian 2018-7-10
Thank you for your explanation. Actually, I realized I put a wrong format(k_). Anyway, I've learned how to assign a name of variable under certain conditions.

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