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[" 3.If "lim(x rarr0)(cos x+a sin bx)^(1...

[" 3.If "lim_(x rarr0)(cos x+a sin bx)^(1/x)=e^(2)," then the values of "^(c)a'],[" and "^(c)b'" are "],[[" (a) "a=1,b=2," (b) "a=2,b=1/2],[" (c) "a=2sqrt(2),b=(1)/(sqrt(2))," (d) "a=4,b=2]]

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