We havefor any real y so 1-y=x
Now we change variables to a=x+y and b=6x+y.
After substitution we obtain u(0,b)=f(b).
Find f(b).
Thx for any help.
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We have
Now we change variables to a=x+y and b=6x+y.
After substitution we obtain u(0,b)=f(b).
Find f(b).
Thx for any help.