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Q.

Let  f1:RR;f2:(π2,π2)R;  f3:(1,eπ/22)R,  and  f4:RR be functions defined by 

i)   f1(x)=sin(1ex2)        
ii) f2(x)=|sinx|Tan1x,           x0                          =1,                                 x=0  Where the inverse trigonometric function  Tan1x  assumes values in  

      (π2,π2)
iii) f3(x)=[sin(loge(x+2))], Where tR,   [t]  denotes the greatest integer less than or equal to ‘t’

iv)  f4(x)=x2sin(1x),          x0                          =0,                                       x=0
 

 LIST-I LIST-II
 The function  f1 is  Not Continuous at x=0
 The function is f2  is  Continuous at  x=0 and not differentiable at x=0
 The function  f3  is  Differentiable at x=0 but its derivative is not Continuous at  x=0
 The function f4  is Differentiable at x=0 and its derivative is Continuous at x=0

The correct option is:

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a

P2;Q1;R4;S3

b

P4;Q1;R2;S3

c

P4;Q2;R1;S3

d

P2;Q3;R1;S4

answer is D.

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Detailed Solution

i)   Limh0sin1eh21eh21eh2h2|h|h  does not exist    
ii)  Limx0(|sinx||x|xTan1x|x|x)  does not exist    
iii)  [sin(log(x+2))]=0      f3(x)=0
iv)   Limx0f41(x)  does not exist 

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