Maths-
General
Easy
Question
Let 
. Then f decreases in the interval :
- (−
, −2)
- (−2, −1)
- (1, 2)
- (2, )
, −2)
)
The correct answer is: (1, 2)
when 1 < x < 2
f(x) decreases in the interval (1, 2).
Related Questions to study
Maths-
The function f(x) = | px − q|+ r|x|, 
,where p > 0, q > 0, r > 0, assumes its minimum value only at one point if :
The function f(x) = | px − q|+ r|x|, ,where p > 0, q > 0, r > 0, assumes its minimum value only at one point if :
Maths-General
Maths-
The number of solutions of the equation x3 + 2x2 + 5x + 2 cos x = 0 in [0, 2
] is :
The number of solutions of the equation x3 + 2x2 + 5x + 2 cos x = 0 in [0, 2 ] is :
Maths-General
Maths-
The distance between the origin and the normal to the curve y = e2x + x2 at the point x = 0 is :
The distance between the origin and the normal to the curve y = e2x + x2 at the point x = 0 is :
Maths-General
Maths-
The function f(x) = (x2 − 1) |x2 − 3x + 2 | + cos | x |) is not differentiable at :
The function f(x) = (x2 − 1) |x2 − 3x + 2 | + cos | x |) is not differentiable at :
Maths-General
Maths-
If xy yx = 1, then 
is :
If xy yx = 1, then is :
Maths-General
Maths-
If g(x) is a polynomial such that g(x) g(y) = g(x) + g(y) + g(xy) − 2 for all real x and y and g(2) = 5, then 
is :
If g(x) is a polynomial such that g(x) g(y) = g(x) + g(y) + g(xy) − 2 for all real x and y and g(2) = 5, then is :
Maths-General
Chemistry-
Dehydrohalogenation reaction of 2-chlorobutane gives 2-butene.
(R) Elimination reaction takes' place according to Saytzeff's rule.
Dehydrohalogenation reaction of 2-chlorobutane gives 2-butene.
(R) Elimination reaction takes' place according to Saytzeff's rule.
Chemistry-General
Chemistry-
(R) -CN is an ambident nucleophile, therefore, reaction gives both cyanide and isocyanide.
(R) -CN is an ambident nucleophile, therefore, reaction gives both cyanide and isocyanide.
Chemistry-General
Chemistry-
If 1,3-dibromopropane reacts with zinc and NaI, the product. obtained is : .
If 1,3-dibromopropane reacts with zinc and NaI, the product. obtained is : .
Chemistry-General
Chemistry-
In the following reaction, .
The major product obtained is :
In the following reaction, .
The major product obtained is :
Chemistry-General
Chemistry-
For the following reaction,
product [A] is:
For the following reaction,
product [A] is:
Chemistry-General
Chemistry-
When 2-chloro-2-methylbutane is heated with alcoholic KOH, the possible product/s is/are:
i) 
ii) 
iii) 
When 2-chloro-2-methylbutane is heated with alcoholic KOH, the possible product/s is/are:
i)
ii)
iii)
Chemistry-General
Chemistry-
(A) predominantly is:
(A) predominantly is:
Chemistry-General
Chemistry-
Ethyl chloride on reduction with 
gives compound , X' as an important product. 'X' on chlorination with one mole of Cl2 in the presence of light at ordinary temperature gives' Y'. What is 'Y' ?
Ethyl chloride on reduction with gives compound , X' as an important product. 'X' on chlorination with one mole of Cl2 in the presence of light at ordinary temperature gives' Y'. What is 'Y' ?
Chemistry-General
Chemistry-
(X) is:
(X) is:
Chemistry-General
