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f(x)=(sinx+cosx)^(c o s e c x) ,-pi/2ltx...

`f(x)=(sinx+cosx)^(c o s e c x) ,-pi/2ltxlt0` `a,x=0` `(e^(1/x)+e^(2/x)+e^(3/|x|))/(ae^(2/x)+be^(3/|x|)), 0ltxltpi/2` continuous at `x=0` find a and b.

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