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

" 23.If "f(x)=|[sin x,cos x,tan x],[x^(3),x^(2),x],[2x,1,x]|,x in((-pi)/(2),(pi)/(2))" then "Lt_(x rarr0)(f(x))/(x^(2))" is "

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