by BrainHub | Aug 18, 2023 | Updates
Linear Programming Class 12 Important Questions with Solutions Previous Year Questions Question 1. A small firm manufactures necklaces and bracelets. The total number of necklaces and bracelets that it can handle per day is at most 24. It takes one hour to make a...
by BrainHub | Aug 18, 2023 | Updates
Three Dimensional Geometry Class 12 Important Questions with Solutions Previous Year Questions Question 1. If a line makes angles 90°, 135°, 45° with the x, y and z axes respectively, find its direction cosines. (Delhi 2019) Answer: Let direction cosines of the line...
by BrainHub | Aug 18, 2023 | Updates
Vector Algebra Class 12 Important Questions with Solutions Previous Year Questions Algebra of Vectors Question 1. Find the position vector of a point which divides the join of points with position vectors a⃗ −2b⃗ and 22a⃗ +b⃗ externally in the ratio 2:1. (Delhi...
by BrainHub | Aug 18, 2023 | Updates
Differential Equations Class 12 Important Questions with Solutions Previous Year Questions Formation of Differential Equations Question 1. Find the order and the degree of the differential equation. (Delhi 2019) x2d2ydx2={1+(dydx)2}4 Answer: Given differential...
by BrainHub | Aug 18, 2023 | Updates
Integrals Class 12 Important Questions with Solutions Previous Year Questions Question 1. Find ∫sin2x−cos2xsinxcosx dx. (All India 2017) Answer: = ∫(tan x – cot x) dx = ∫ tan x dx – ∫ cot x dx = log |sec x| – [- log|cosec x|] + C = log |sec x| + log|cosec x| + C = log...
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