A ladder leans against the side of a house. The top of the ladder is 8ft from the ground. The bottom of the ladder is 7ft from the side of the house. Find the length of the ladder. If necessary, round your answer to the nearest tenth.

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis