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WAEC Mathematics – Liberia

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Question 271

The sum of the first \( n \) terms of an arithmetic progression (AP) is given by \( S_n = 3n^2 + 2n \). Find the first term \( a_1 \) and the common difference \( d \).
Sequences and seriesSequences and serieshard

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Question 272

If set A = {1, 3, 5, 7} and set B = {3, 4, 5, 6}, what is A ∩ B?
Sets and logicSets and logiceasy

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Question 273

Find the derivative of f(x) = x^3 - 4x^2 + 7.
Differentiation (calculus)Differentiationmedium

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Question 274

The vector u = 3i - 2j and vector v = -i + 4j. What is the dot product u · v?
VectorsVectorshard

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Question 275

If set A = {1, 2, 3, 4} and set B = {3, 4, 5, 6}, what is the intersection of sets A and B?
Sets and logicSets and Logiceasy

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Question 276

Simplify the algebraic expression: 3(x - 2) + 4(2x + 1).
Algebraic expressions and equationsAlgebraic Expressionseasy

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Question 277

Which of the following quadratic equations has roots 3 and -2?
Quadratic equations and functionsQuadratic Equationsmedium

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Question 278

Find the derivative of f(x) = 5x³ - 2x² + x - 7.
Differentiation (calculus)Differentiationmedium

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Question 279

Evaluate the integral ∫ (2x + 3) dx.
Integration (calculus)Integrationeasy

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Question 280

Find the roots of the quadratic equation x² - 4x + 3 = 0.
Quadratic equations and functionsQuadratic equations and functionsmedium

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