On a piano, each key has a frequency, and each subsequent key (black or white) is a known amount higher. ex: the a key above middle c key has a frequency of 440 hz. each subsequent key (black or white) has a frequency of 440 * rn, where n is the number of keys from that a key, and r is 2(1/12). given an initial frequency, output that frequency and the next 3 higher key frequencies. if the input is 440, the output is: 440 493.883 523.251 554.365.note: include one statement to compute r = 2(1/12) using the pow function, then use r in the formula fn = f0 * rn. (you'll have three statements using that formula, different only in the value for n).