Question 221
Solve for \( x \) in the equation \( 2x^2 - 5x + 2 = 0 \).Quadratic equations and functionsQuadratic equations and functionsmedium
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WAEC Mathematics – Gambia
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Question 222
Given \( \log_2 x = 5 \), what is the value of \( x \)?Logarithms and exponentialsLogarithms and exponentialseasy
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Question 223
Evaluate the derivative of \( f(x) = 3x^3 - 5x^2 + 2x -7 \).Differentiation (calculus)Differentiationmedium
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Question 224
A bag contains 3 red balls and 5 blue balls. Two balls are drawn at random without replacement. What is the probability that both balls are red?Probability and statisticsProbability and statisticseasy
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Question 225
The inequality 3x - 7 < 2x + 5 represents which of the following solution sets?Inequalities and graphsInequalities and graphseasy
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Question 226
Given the sequence defined by \( a_n = 3n - 1 \), what is the sum of the first 20 terms?Sequences and seriesSequences and seriesmedium
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Question 227
If \( \vec{a} = 2\hat{i} - 3\hat{j} + \hat{k} \) and \( \vec{b} = -\hat{i} + 4\hat{j} + 2\hat{k} \), what is \( \vec{a} \cdot \vec{b} \)?VectorsVectorshard
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Question 228
Given vectors u = (2, -1, 3) and v = (0, 4, -2), what is the dot product u · v?VectorsVectorsmedium
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Question 229
Find the integral of f(x) = 2x^3 with respect to x.Integration (calculus)Integration (calculus)hard
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Question 230
Given the vector \( \vec{u} = 3\hat{i} - 2\hat{j} + \hat{k} \) and \( \vec{v} = -\hat{i} + 4\hat{j} + 2\hat{k} \), what is the dot product \( \vec{u} \cdot \vec{v} \)?VectorsVectorsmedium
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