9.36.3 Can you answer these questions?

9.36.3.1 Numerical Galerkin method with parametrized interpolation function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=291960

modified 
Here I try to realize a numerical fit (Galerkin method) using parametrized Interpolation function to fit examplary  Exp[x]  in a given grid. So far I tried 
<... 
[numerical-integration] [mathematical-optimization] [interpolation]
 

asked by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 Score of 2

9.36.3.2 Minimization of an implicitly specified function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=291941

 exp  - an experimental data, where  expT  - temperature,  expChi  - magnetic susceptibility 
I ... 
[equation-solving] [calculus-and-analysis] [mathematical-optimization] [numerics]
 

asked by Mam Mam https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=88159 Score of 1

answered by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 Score of 0

9.36.3.3 Simplifying products of DiracDelta

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=291806

I want to simplify expressions containing DiracDelta products. For example I want to simplify the expression 
$$\delta(z-2)\delta(k-5)\delta(t-z-k-9)$$ 
to give the answer 
$$\delta(z-2)\delta(k-5)\delta(... 
[simplifying-expressions] [replacement] [programming] [rule] [products]
 

asked by Mohamed Mostafa https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=87412 Score of 1

answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 Score of 0