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var('u_5 u beta') y = u - u_5 + beta*(exp(u)-u-4) beta = 1.0 u_5 = -4.0 p = y.subs(u==u_5) p

results in: 0.0183156388887342*beta - u_5 - 4.00000000000000

How can I get a numerical value? I did try numerical_approx, n() etc.

I expect it to multiply 0.0183... by 1 (beta) and subtract the -4 for u_5

var('u_5 u beta') y = u - u_5 + beta*(exp(u)-u-4) beta = 1.0 u_5 = -4.0 p = y.subs(u==u_5) p

results in: 0.0183156388887342*beta - u_5 - 4.00000000000000

How can I get a numerical value? I did try numerical_approx, n() etc.

I expect it to multiply 0.0183... by 1 (beta) and subtract the -4 for u_5

var('u_5 u beta') y = u - u_5 + beta*(exp(u)-u-4) beta = 1.0 u_5 = -4.0 p = y.subs(u==u_5) p

results in: 0.0183156388887342*beta - u_5 - 4.00000000000000

How can I get a numerical value? I did try numerical_approx, n() etc.

I expect it to multiply 0.0183... by 1 (beta) and subtract the -4 for u_5

var('u_5 u beta') y = u - u_5 + beta*(exp(u)-u-4) beta = 1.0 u_5 = -4.0 p = y.subs(u==u_5) p

results in: 0.0183156388887342*beta - u_5 - 4.00000000000000

How can I get a numerical value? I did try numerical_approx, n() etc.

I expect it to multiply 0.0183... by 1 (beta) and subtract the -4 for u_5

EDIT : reformatted code

var('u_5 u beta')
 y = u - u_5 + beta*(exp(u)-u-4)
 beta = 1.0
 u_5 = -4.0
 p = y.subs(u==u_5)
    p
p

results in: 0.0183156388887342*beta - u_5 - 4.00000000000000

How can I get a numerical value? I did try numerical_approx, n() etc.

I expect it to multiply 0.0183... by 1 (beta) and subtract the -4 for u_5