- x axis (t) 172 241 392 483 608 812 959 1305
- y axis (h) .20 .60 2.0 4.0 8.0 20.0 40.0 80.0
Using the above data I am required to…
- Enter the data as vectors
- Plot the data and by changing the axes determine the function type
- Using polyfit, determine the equation constants
- Create a plot (using the linear form of the graph)that includes the highlighted data points along with your best fit equation
I entered the data as vectors…
t=[172,241,392,483,608,812,959,1305]
h=[0.200,0.6.00,2.00,4.00,20.00,40.00,80.00]
I determined the data represents a power function by plotting it on a log log series
I THINK I determined the constants using the following commands…
>> p=polyfit(log(t),log(h),1)
p =
2.9861 -17.0002
If I am correct the 2.9861 represents m and -17.0002 represents b in the equation y=m*x^b
I really don't know how to graph the linear form correctly and I am unsure of how to do it to include the "highlighted data points"
I attempted to do it using the commands…
>> m=p(1)
m =
2.9861
>> b=p(2)
b =
-17.0002
>> y=[m*t+b];
>> plot(y)
I am pretty sure the graph isn't correct and there aren't any highlighted points… Any input on what I did wrong and should do differently would be GREATLY appreciated. Thank you in advance.
Best Answer