Maths - Online Test
Q1. In the set ℚ define a 
b = a +b +ab . For what value of y, 3 ( y 5)= 7 ?
b = a +b +ab . For what value of y, 3 ( y 5)= 7 ?
Answer : Option B
Explaination / Solution:
Q2. The volume of the parallelepiped with its edges
represented by the vectors iˆ + ˆj, iˆ + 2 ˆj, iˆ + ˆj + π kˆ is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. The slope of the line normal to the curve f (x) = 2 cos 4x at x = π/12 is
Answer : Option C
Explaination / Solution:
Q4. If P= 
is the adjoint of 3× 3 matrix A and | A |= 4 , then x is
is the adjoint of 3× 3 matrix A and | A |= 4 , then x is
Answer : Option D
Explaination / Solution:
Q5. If we measure the side of a cube to be 4 cm with
an error of 0.1 cm, then the error in our calculation of the volume is
Answer : Option D
Explaination / Solution:
Q6. If | z − 2 + i | ≤ 2 , then the greatest
value of | z | is
Answer : Option D
Explaination / Solution:
Q7. If f (x)
= x∫0 t cos t dt
, then df/dx =
Answer : Option C
Explaination / Solution:
Q8. The solution of the differential equation 
represents
represents
Answer : Option C
Explaination / Solution:
Q9. The number of real numbers
in [0, 2π] satisfying sin4 x
− 2 sin2 x +1 is
Answer : Option A
Explaination / Solution:
Q10. If cot−1 x =2π/3
for some x ∈ R , the value of
tan−1 x is
Answer : Option C
Explaination / Solution:
