Math: How to fill in the following series of questions (as long as the grades)?
Hello, I'm glad to answer your question. Analysis of 1 B: ∵ Remember that the geometric series is known as {an}, and ∵ from the known: ∴ A 1 = 2, ∴ A2 =-4, ∴ Q = (A2)/(A65438. ∴ An = 2× (-2) n- 1 power, ∴ A5 = 2× (-2) 5- 1 power = 2× (-2) 4 power = 2× 16 = 32 ∴. B analysis: