most likely, you need to pay attention to the number of significant digits.
I am very sorry if this is in the incorrect section!
After measurements, the following values and their uncertainties were recorded:
x = 8.3 ± 0.1 and y = 2.72 ± 0.07
Find the following values of Z
a) Z = x + y
b) Z = x - y
c) Z = xy
d) Z = x/y
e) Z = y/[(x)^0.5] (this is y divided by the square root of x)
f) Z = exp(y)
g) Z = ln(x + y)
h) tan(x/y)
My attempts: a) 11.02 ± 0.17 ; b) 5.4 ± 0.2 ; c) 22.576 ± 0.007 ; d) 3.1 ± 1.4 ; e) 0.94 ± 0.22 ; f) exp(2.72 ± 0.07) ; g) ln(11.02 ± 0.17) ; h) tan(3.1 ± 1.4)
Any help would be appreciative, I'm a bit rusty, having not done any physics in two years, and apparently, my attempts are all incorrect!