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  • Class 12 Maths Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Maths Continuity and Differentiability for Class 12 student. This free online Maths study material for Class 12 will help students in learning and doing practice on Continuity and Differentiability topic of Class 12 Maths. The study material on Continuity and Differentiability, help Class 12 Maths students to learn every aspect of Continuity and Differentiability and prepare themselves for exams by doing online test exercise for Continuity and Differentiability, as their study progresses in class. Kidsfront provide unique pattern of learning Maths with free online comprehensive study material and loads of Class 12 Maths Continuity and Differentiability exercise prepared by the highly professionals team. Students can understand Continuity and Differentiability concept easily and consolidate their learning by doing practice test on Continuity and Differentiability regularly till they excel in Maths Continuity and Differentiability.


Continuity and Differentiability
What are the types of discontinuity?

a) Removable discontinuity
b) Irremovable discontinuity
c) Both 1 and 2
d) None of these



Answer
Correct Answer Is : Both 1 and 2
Solution Is :
A real value function f is said to have removable discontinuity at x =a in its domain, if lim x → a f(x) exists but ___________.

a) Lim x → a f(x) - f (a)
b) Lim x → a f(x) + f (a)
c) Lim x → a f(x) = f (a)
d) Lim x → a f(x)≠f (a)



Answer
Correct Answer Is : Lim x → a f(x)≠f (a)
Solution Is :
A real value function f is said to have irremovable discontinuity at x =a, if lim x → a f(x) does not exists but _______________ or one of the limits does not exist.

a) Lim x → a¯ f(x)≠lim x → a f (a)
b) Lim x → a f(x)≠lim x → a?f (a)
c) Lim x → a¯ f(x)≠lim x → a?f (a)
d) Lim x → a¯ f(x) = lim x → a?f (a)



Answer
Correct Answer Is : Lim x → a¯ f(x)≠lim x → a?f (a)
Solution Is :
If f and g are two real value functions defined on the same domain, which are continuous at x = a, then the function ______ is continuous at x = a, for any constant k ∊ R.

a) K.f
b) F ± g
c) F.g
d) F / g



Answer
Correct Answer Is : K.f
Solution Is :
If f and g are two real value functions defined on the same domain, which are continuous at x = a, then the function ______ is continuous at x = a.

a) K.f
b) F ± g
c) F.g
d) Both 2 and 3



Answer
Correct Answer Is : Both 2 and 3
Solution Is :
If f and g are two real value functions defined on the same domain, which are continuous at x = a, then the function f.g is continuous at _________ .

a) X = f
b) X= g
c) X = a
d) Both 2 and 3



Answer
Correct Answer Is : X = a
Solution Is :
True or false: the types of continuity 1. removable and irremovable

a) TRUE
b) FALSE
c) Maybe
d) None of these



Answer
Correct Answer Is : FALSE
Solution Is :
If f and g are two real value functions defined on the same domian, which are continuous at x = a, then the function ______ is continuous at x = a, when g (x)≠0.

a) K.f
b) F ± g
c) F.g
d) F / g



Answer
Correct Answer Is : F / g
Solution Is :
If f and g are two real value functions defined on the same domian, which are continuous at x = a, then composite functions, ______________ ,if well defined are continuous functions at x = a.

a) F (g) (x)
b) G (f) (x)
c) F (g) (x) and g (f) (x)
d) None of these



Answer
Correct Answer Is : F (g) (x) and g (f) (x)
Solution Is :
A function f is ___________ at a point x = a in the domain of f if, f (x) exist and lim x → a f(x) = f(a).

a) Continuous
b) Discontinuous
c) Removable
d) Irremovable



Answer
Correct Answer Is : Continuous
Solution Is :
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