# DIsplay numbers in an expression in scientific notation

2 views (last 30 days)
Sita on 22 Nov 2022
Commented: Walter Roberson on 23 Nov 2022
I have an expression that I'm plugging a bunch of values into and I would like for matlab to show me the result with the constants in scientific notation. By default, it shows the constants as big fractions that aren't as easy to work with. Here's what I mean:
syms L1 L2 C1 C2 C3 Rl s;
L1=10e-9;
L2=500e-12;
C1=600E-12;
C2=2E-9;
C3=100E-12;
Rl=2;
H_P_V2DivI1 = (C2*Rl*s + 1)/(C1*C2*L1*s^3 + C1*C2*Rl*s^2 + (C1 + C2)*s)
H_P_V2DivI1 =
((4835703278458517*s)/1208925819614629174706176 + 1)/((8362779449448985*s^3)/696898287454081973172991196020261297061888 + (3115378115120897*s^2)/1298074214633706907132624082305024 + (785801782749509*s)/302231454903657293676544)
Is there a way to display this expression using scientific notation instead? Thanks!

Walter Roberson on 22 Nov 2022
syms L1 L2 C1 C2 C3 Rl s;
L1=10e-9;
L2=500e-12;
C1=600E-12;
C2=2E-9;
C3=100E-12;
Rl=2;
H_P_V2DivI1 = (C2*Rl*s + 1)/(C1*C2*L1*s^3 + C1*C2*Rl*s^2 + (C1 + C2)*s)
H_P_V2DivI1 = vpa(H_P_V2DivI1, 16)
ans = Walter Roberson on 23 Nov 2022
yes optional second parameter is the number of digits. Otherwise it uses the current digits() setting

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