CBSE Class XII Maths Compartment Paper 2009
SECTION A
Questions number 1 to 10 carry 1 mark each.
Q.1 Write the direction cosines of a line parallel to the line :
Q.2 Find a unit vector in the direction of the vector a = -2i + j + 2k.
Q.3 Find a.b if a=3i-j+2k and b=2i+3j+3k.
Q.4 Evaluate : ∫(cosec2 x – cot x) ex dx
Q.5 Find the slope of the tangent to the curve y = 3x2 – 4x at the point whose x-coordinate is 2.
Q.6 Let * be a binary operation on set Q of rational numbers defined as a * b = ab/5 . Write the identity for *, if any
Q.7 Using the principal values, evaluate : tan-11 + sin-1 (-1/2)
Q.8 If
find A + A’, where A’ is the transpose of matrix A.
Q.9 If
, Find the value of x.
Q.10 Evaluate :
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