elis

This page lists questions and answers that were posted by visitors named elis.

Questions

The following questions were asked by visitors named elis.

differentiate y=-4x^2cos x. i need to know the calculation work. (ans: 4x^2sinx - 8xcosx)

differentiate y=(x)^(1/2)e^(-x).i need the calculation work. [ans: -x^(1/2)e^(-x) + 1/2(x^-1/2)e^(-x)]

a mixture of NaBr & NaCl has a mass of 2g & found to contain 0.75g of Na. What is the mass of NaBr in the mixture?

Answers

The following answers were posted by visitors named elis.