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[" 29.If "f(x)=(cos x)/((1-sin x)^(1/3))...

[" 29.If "f(x)=(cos x)/((1-sin x)^(1/3))" ,then "],[[" (a) "lim_(x rarr(pi)/(2))f(x)=-oo," (b) "lim_(x rarr(pi)/(2))f(x)=oo],[" (c) "lim_(x rarr(pi)/(2))f(x)=oo," (d) none of these "]]

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