how can i use curve fitting tools for get m and n in this equation  for excel data

equation

i want to get m and n?

New_Microsoft_Excel_Worksheet.xlsx

hi . i want to get maximize in dsolve numeric y(t) D(y)(t) and y(t) double dot

restart;
with(plots);
with(Optimization);
sol := {diff(y(t), t, t) + 2*diff(y(t), t) + 4*y(t) = 0.9*sin(9*t), y(0) = 0, D(y)(0) = 0};
so := dsolve(sol, numeric, method = rkf45);
plots:-odeplot(so, [t, y(t)], t = 0 .. 4);
Maximize(??????);
 

hello. i write this code for use 6 cpu cores but it write 4

i want to write a expression without any quotes . for example in this case i want to wrate E*1    E*2 

hello

why this pdsolve not be answer

pde := diff(T(x, y, t), x, x)+diff(T(x, y, t), y, y) = (1/0.44e-2)*(diff(T(x, y, t), t));
conds := T(0, y, t) = 1, T(1, y, t) = 1, T(x, 0, t) = 1, T(x, 1, t) = 1, T(x, y, 0) = 0;
`assuming`([pdsolve([pde, conds])], [0 <= x and x <= 1, 0 <= y and y <= 1, t >= 0]);