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" 1.If "f(x)=|[sin x,cos x,tan x],[x^(3)...

" 1.If "f(x)=|[sin x,cos x,tan x],[x^(3),x^(2),x],[2x,1,1]|" then show that "lim_(x rarr0)(f(x))/(x^(2))=1

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