You got some series in part a. Let's call that (f(x)). The question wants to know how well (f(x)) approximates (h(x)) at (x = 0.01). One way of doing this is to compute (\frac{f(0.01)}{h(0.01)}) (which it wants you to give as a percentage)
#binomial expansion
little basalt
silver novaBOT
invariance.
little basalt
it wants you to give the percentage error which means you subtract one (100%) from that and get take the absolute value
so if f was 99% of h or 101% of h, your answer would be 1%
[\abs{\frac{f(0.01)}{h(0.01)} - 1} = \abs{1- \frac{f(0.01)}{h(0.01)}} = \abs{\frac{h(0.01) - f(0.01)}{h(0.01)}}]
silver novaBOT
invariance.
little basalt
a few ways you might see it written ^