- its killing me. ive been fine in calculus but for some reason linear approximation is just not clicking for me. here's the problem:

Use differentials (linear approximation) to estimate https://webwork.rutgers.edu/webwork2...1296499281.png. Base the approximation at https://webwork.rutgers.edu/webwork2...f58ee651a1.png.

ive tried solving this many different ways, always different answers, always incorrect. if anyone can help, with a step by step procedure so when i see another similar problem ill be able to solve it?