The frequency, f kilohertz (kHz) of a radio wave is inversely proportional to its wavelength, λ m. The frequency of a radio
wave that has wavelength of 3000 m is 100 kHz. Find:
(i) the frequency of a radio wave that has a wavelength of 500 m.
(ii) the wavelength of a radio wave that has a frequency of 800 kHz.

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.