the derivative of 1x would be 1 the derivative of x to the power of 1 would be 1. the derivative of x+1 would be 1 the derivative of x-1 would be 1 im not sure what you are asâ¦king, but however you put it, it's 1. 2 people found this useful.
Subduction-zone stratovolcanoes, such as Mount St. Helens, Mount Etna, and Mount Pinatubo, typically erupt with explosive force: the magma is too stiff to allow easy escape of volcanic gases. As a consequence, the tremendous internal pressures of the trapped volcanic gases remain in the pasty magma.
History. Mount Etna has the longest documented eruption history of any volcano in the world. Lava flows at the base of the volcano have been dated back to 1500 B.C., and ancient Greeks had a variety of myths surrounding it.