MATH (CLASS -11)

The set of all the points on the circumference of circle is

• finite set

• infinite set

• empty set

• null set

If A={1, 3, 5} How many elements has P(A)

• 8

• 6

• 9

• 4

Find the domain and range of the real function  $f\left(x\right)=\frac{x}{1+x^2}$  

• (-1 ,1)

• [-1 ,1]

• All real no.

• none these

 $Findthedomainandrangeoftherealfunctionf\left(x\right)=\frac{1}{1-x^2}$  

• R- {-1 ,1}

• R- [-1 ,1]

• (1, -1)

• [-1  ,1]

if order pair (2a + b, a – b) = (8, 3) value of "a" and "b" is

• 11/3, 2/3

• -11/3 ,-2/3

• 11/3 ,-2/3

• -11/3 ,2/3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The value of cos 180° is

• (a) 0

• (b) 1

• (c) -1

• (d) infinite

Tags

CCSS.HSF.TF.A.2

If 3 × tan(x – 15) = tan(x + 15), then the value of x is

• (a) 30

• (b) 45

• (c) 60

• (d) 90

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The value of tan 20 × tan 40 × tan 80 is

• (a) tan 30

• (b) tan 60

• (c) 2 tan 30

• (d) 2 tan 60

Tags

CCSS.HSF.TF.C.9

The sum of the series 1³ + 2³ + 3³ + ………..n³ is

• (a) {(n + 1)/2}²

• (b) {n/2}²

• (c) n(n + 1)/2

• (d) {n(n + 1)/2}²

The nth terms of the series 3 + 7 + 13 + 21 +………. is

• (a) 4n – 1

• (b) n² + n + 1

• (c) none of these

• (d) n + 2

Tags

CCSS.HSF.BF.A.2