According to the Ebbinghaus model, the fraction F(t) of subject matter you will remember from this course t months after the final exam can be estimated by the formula

where B is the fraction of the material you will never forget and k is a constant that depends on the quality of your memory. Suppose you are tested and it is found that B = 0.3 and k = 0.2. What fraction of the material will you remember 1 month after the class ends? What fraction will you remember after 1 year?

Transcribed Image Text:

-kt F(t) = B + (1 - B)e