Solve for .
Answer and explanation
Correct answer: A. 4
- Step 1: Combine the logarithms: , so and . Only keeps both logarithms defined. Answer: 4. Why not the others: -2: is rejected because the logarithm is undefined. 2: satisfies only the second factor. 8: equals the value of the product.
Practise more Calculus, algebra, series and probability.
Free questions with an explanation for every one, and full timed Stúdentspróf (Iceland) mock tests.