The impulse response can be written in the form h (t) = K e ?t u (t) . Find the numerical values of K and ?.

Social forecasters project a fairly optimistic future

Indicate whether the statement is true or false.

Which of the following is the best statement about individual differences in the rate or pattern of physiological aging?

a. The maturational sequences are very powerful; virtually all adults follow the same sequences at the same rates. b. There are significant maturational sequences, although there is room for individual variation within relatively narrow limits. c. There are significant underlying maturational sequences, but there are very wide individual variations in rate and pattern. d. There are no shared underlying maturational sequences.