# Periodicity and Extreme Value – Problems

Periodicity and Extreme Value – Problems Find the periods for the given functions. 1. Cos (3x + 5) + 7 Solution: Given that Cos (3x + 5) + 7 Period of cosx = 2π Period = $$\frac{period\ of\ \cos x}{[coefficient\ of\ x]}=\frac{2\pi }{3}$$ 2. Tan5x Solution: Given that Tan5x f(x) = tan5x Period of tanx Read more about Periodicity and Extreme Value – Problems[…]

# Light Emitting Diode (LED)

Light Emitting Diode (LED) A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a single wavelength. The output from an LED can range from red to blue-violet. Some LEDs emit infrared (IR) energy, such a Read more about Light Emitting Diode (LED)[…]