Can someone help me solve.. xsqrt(16-x^2) .. (x times the sqrt of 16-x^2)?

ive got to find the 1st and second derivatives. the critical numbers. symmetry. asymptotes. the domain and range. points of inflection. increasing and decreasing. where it crosses the x and y axis. the x-int. and y-ints. etc. PLEASE HELPPPP!!!!