format of output in command window

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M Gokul
M Gokul 2016-6-1
评论： M Gokul 2016-6-2
I am getting output of simple math equations
36.0801*1.1462-181.04*(-.13341-.05423*K))/36.0801
(53973921897849552896*K)/198352447406604296875 + 720263206506893453689/396704894813208593750.
i am not getting the decimal form!
i need the answer in decimal form so as to perform more calculations

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Ahmed Rashid
Ahmed Rashid 2016-6-2
You can use
syms K
A = (36.0801*1.1462-181.04*(-.13341-.05423*K))/36.0801;
d = 5; % decimal accuracy;
vpa(A,d)
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Ahmed Rashid
Ahmed Rashid 2016-6-2
If you want to evaluate the expression you can use
syms K
A = (36.0801*1.1462-181.04*(-.13341-.05423*K))/36.0801;
subs(A, K, 1) % K = 1;
M Gokul
M Gokul 2016-6-2
thank you I found out that. Vpa has to be used wen using symbolic var thanks very much

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