## Differentibility Quiz-15

As per analysis for previous years, it has been observed that students preparing for JEE MAINS find Mathematics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Mathematics due to their ENGINEERING background. Furthermore, sections such as Mathematics are dominantly based on theories, laws, numerical in comparison to a section of Engineering which is more of fact-based, Physics, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced..
Differentiability Quiz-15
Q1. If f(x)=x sin⁡(1/x),x≠0, then the value of function at x=0, so that the function is continuous at x=0 is
•  1
•  -1
•  0
•  Indeterminate
Solution

Q2.The number of points at which the function f(x)=(|x-1|+|x-2|+cos⁡x) where x∈[0,4] is not continuous, is
•  1
•  2
•  3
•  0
Solution

Q3.  The function (2x2+7)/(x3+3x2-x-3) is discontinuous for
•   x=1 only
•  x=1 and x=-1 only
•  x=1,x=-1,x=-3 only
•  x=1,x=-1,x=-3 and other values of x
Solution

Q4. The value of the derivative of |x-1|+|x-3| at x=2 is
•  2
•  1
•  0
•  -2
Solution

Q5. Let [x] denotes the greatest integer less than or equal to x and f(x)=[tan2⁡x]. Then,?
•  lim┬(x→0)⁡〖f(x)〗 does not exist
•  f(x) is continuous at x=0
•  f(x) is not differentiable at x=0
•  f'(0)=1
Solution

Q6. Let f(x) be an even function. Then f'(x)
•  Is an even function
•  Is an odd function
• May be even or odd
•  None of these
Solution

Q7. If f(x)={|x|-|x-1}2, then f'(x) equals
•  0 for all x
•  2{|x|-|x-1|}
•
•
• Solution

Q8.
•  f is differentiable at x=1 but not at x=0
•  f is neither differentiable at x=0 nor at x=1
•  f is differentiable at x=0 and at x=1
•  f is differentiable at x=0 but not at x=1
Solution

Q9.
•  a-b
•  a+b
•  log⁡a+log⁡b
•  None of these
Solution

Q10.

•  n=1,m=1
•  n=1,m=-1
•  n=2,m=2
• n>2,m=n
Solution

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