What is the arc length of #f(x)=10+x^(3/2)/2# on #x in [0,2]#?
1 Answer
Mar 15, 2018
Explanation:
#f(x)=10+1/2x^(3/2)#
#f'(x)=3/4sqrtx#
Arc length is given by:
#L=int_0^2sqrt(1+9/16x)dx#
Integrate directly:
#L=32/27[(1+9/16x)^(3/2)]_0^2#
Insert the limits of integration:
#L=32/27((17/8)^(3/2)-1)#
Simplify:
#L=1/27(17sqrt34-32)#