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#QuestionSubject and topicDifficulty
4301 For AX = B, suppose |A| = 0 and (adj A)B ≠ O. Then the system Mathematics/Applied Mathematics
Solving systems of linear equations
Medium
4302 For which value of k does the system kx + 2y = 3, 2x + y = 5 have no solution? Mathematics/Applied Mathematics
Solving systems of linear equations
Medium
4303 The system x + y + z = 6, y + 3z = 11, x − 2y + z = 0 has the solution Mathematics/Applied Mathematics
Solving systems of linear equations
Hard
4304 If f(x) = kx + 1 for x ≤ 2 and f(x) = 3x − 1 for x > 2, for which value of k is f continuous at x = 2? Mathematics/Applied Mathematics
Continuity and differentiability
Easy
4305 At x = 0, the function f(x) = |x| is Mathematics/Applied Mathematics
Continuity and differentiability
Easy
4306 The derivative of sin(x²) with respect to x is Mathematics/Applied Mathematics
Continuity and differentiability
Medium
4307 If f(x) = x² for x ≤ 1 and f(x) = ax + b for x > 1 is differentiable at x = 1, then (a, b) equals Mathematics/Applied Mathematics
Continuity and differentiability
Medium
4308 At how many points is f(x) = |x − 1| + |x − 2| not differentiable? Mathematics/Applied Mathematics
Continuity and differentiability
Hard
4309 The derivative of tan⁻¹x with respect to x is Mathematics/Applied Mathematics
Derivatives of special functions
Easy
4310 The derivative of log(sin x) is Mathematics/Applied Mathematics
Derivatives of special functions
Easy
4311 If x = at² and y = 2at, then dy/dx equals Mathematics/Applied Mathematics
Derivatives of special functions
Medium
4312 For the curve x² + y² = 25, the value of dy/dx at the point (3, 4) is Mathematics/Applied Mathematics
Derivatives of special functions
Medium
4313 If y = x^x for x > 0, then dy/dx equals Mathematics/Applied Mathematics
Derivatives of special functions
Hard
4314 If y = x³ − 2x, then d²y/dx² equals Mathematics/Applied Mathematics
Second-order derivatives
Easy
4315 The second derivative of y = sin x is Mathematics/Applied Mathematics
Second-order derivatives
Easy
4316 The function y = e^(3x) satisfies which of the following? Mathematics/Applied Mathematics
Second-order derivatives
Medium
4317 If y = log x, the value of d²y/dx² at x = 2 is Mathematics/Applied Mathematics
Second-order derivatives
Medium
4318 If x = a cos t and y = a sin t, then d²y/dx² equals Mathematics/Applied Mathematics
Second-order derivatives
Hard
4319 The rate of change of the area of a circle with respect to its radius r, when r = 5 cm, is Mathematics/Applied Mathematics
Rate of change
Easy
4320 A particle moves so that s = t³ − 3t metres after t seconds. Its velocity at t = 2 s is Mathematics/Applied Mathematics
Rate of change
Easy