CBSE class 12th Maths One Marks Important Questions

CBSE class 12th Maths One Marks Important Questions

12th CBSE 12th Exam Tips

CBSE board examination 2018 will be held from first week of March students are too much stressed due to the peer pressure of course in so as to get learn them and attempt maximum paper simply

Important question for CBSE class 12th maths examination for 1 marks questions given below in the article all the questions given in the below article are from the research team from 

Some Important Questions of Maths for 1 marks 

@: Find the vector equation of a plane which is at a distance of 5 units from the origin and its normal vector is 2 î – 3 ĵ+ 6 k^.

@: If A is a square matrix of order 3 such that |adj A| = 64, find |A|.

@: The total cost C (x) associated with provision of free mid-day meals to x students of a school in primary classes is given by

C (x) = 0.005 x3 ‒ 0.02 x2 + 30 x + 50.

@: Let R = {(a, a3): a is a prime number less than 5} be a relation. Find the range of R.

@: If A is a 3 × 3 matrix, |A| ≠ 0 and |3A| = k |A|, then write the value of k.

@: Find the value of ‘p’ for which the vectors 3i + 2j + 9k and i ‒ 2pj + 3k are parallel.

@: Integrate: {(1 + log x)2/x} dx

@: Evaluate: sin [2cos‒1(‒3/5)].

@: What is the principal value of tan‒1 [tan 2π/3]?

@: Write the value of

tan‒1 (a/b) ‒ tan‒1[(a ‒ b)/(a + b)].

Class 12 Maths Sample Paper (Issued by CBSE)

@:Write the value of cos–1(‒1/2) + 2 sin‒1(1/2)

@:Write the principal value of tan‒1(‒1)?

@: Evaluate: Sin [π/2 ‒ sin‒1(‒1/2)]

CBSE Examination Pattern or Blue Print: Class 12 Maths Board Exam 2018

@: Write the value of cos–1[cos (7π/6)]?

@: State the reason for the following Binary Operation *, defined on the set Z of integers, to be not commutative. a * b = ab3.

@: Give an example of a skew symmetric matrix of order 3.

@: Using derivative, find the approximate percentage increase in the area of a circle if its  radius is increased by 2% .

@: Find the derivative of tan f (etan x) with respect to x at x = 0. It is given that f’(1) 5.

@: If the line (x ‒ 1)/‒2 = (y ‒ 4)/3p = (z ‒ 3)/4 and (x ‒ 2)/4p = (y ‒ 5)/2 = (z ‒ 1)/‒7 are perpendicular to each other, then find the value of p.

@: A and B are square matrices of order 3 each, |A| = 2 and |B| = 3. Find |3AB|

@:Let f : R → R be defined by f(x) = 3×2 ‒ 5 and g : R → R be defined by g (x) = x/(x2+1). Find gof.

@:Let A= {1,2,3,4} Let R be the equivalence relation on A × A defined by (a, b) R (c, d) iff a + d = b + c. Find equivalence class [(1, 3)]

@: If A = [aij] is a matrix of order 2 × 2, such that |A| = ‒ 15 and Cij represents the cofactor of aij, then find a21c21 + a22c22.

@: Determine whether the binary operation * on the set N of natural numbers defined by a * b = 2ab is associative or not.

@: Find the distance between the planes 2x – y + 2z = 5 and 5x – 2.5y + 5z = 20.

@: If A is a square matrix such that A2 = I, then find the simplified value of (A – I)3 + (A + I)3 – 7A.

@: If a matrix has 5 elements, write all possible orders it can have.

@:Write the direction-cosines of the line joining the points (1, 0, 0) and (0, 1, 1).

@:Write the projection of the vector i – j on the vector i + j.

@: Write the vector equation of the line given by  (x ‒ 5)/3 = (y + 4)/7 = (z ‒ 6)/2.

@:Write the intercept cut off by the plane 2x + y – z =5 on x–axis.

@: For a 2 × 2 matrix, A = [aij], whose elements are given by aij = i/j’ write the value of a12

@: If f(x) = x + 7 and g(x) = x ‒ 7, x ∈ R, find (fog) (7).

@: If f(x) is an invertible function, find the inverse of f (x) = (3x ‒ 2)/5.

@: Show that the points (1, 0), (6, 0), (0, 0) are collinear.

@:Find a vector in the direction of vector a = i ‒ 2j, whose magnitude is 7.

@: If matrix A = (1 2 3), write AA’, where A’ is the transpose of matrix A.

@: If the binary operation * on the set of integers Z, is defined by a *b = a + 3b2 , then find the value of 2 * 4.

@: Find the distance of the plane 3x – 4y + 12z = 3 from the origin.

@: Write the position vector of the mid-point of the vector joining the points P (2, 3, 4) and Q (4, 1, ‒2).

@: If a . a = 0 and a . b = 0, then please what can be concluded about the vector b?

@: What are the direction cosines of a line, which makes equal angles with the co-ordinates axes?

@: Write the position vector of the mid-point of the vector joining the points P (2, 3, 4) and Q (4, 1, ‒2).

@:What are the direction cosines of a line, which makes equal angles with the co-ordinates axes?

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