Steve, you've been an amazing help. Thank you so much. This is the last question I need checked.
Solve ∜82 using differentials. I got 3.00926
y = x^(1/4)
dy = 1/4 x^(-3/4) dx
y(81) = 3
dx=1, so dy = 1/4 * 1/27 = 1/108
y(82) ≈ 3+1/108 = 3.00926
Solve ∜82 using differentials. I got 3.00926
dy = 1/4 x^(-3/4) dx
y(81) = 3
dx=1, so dy = 1/4 * 1/27 = 1/108
y(82) ≈ 3+1/108 = 3.00926