Hi 

I was trying to have a graph whose axes are X axis: m, Y axis: var[X ((a,b) in suffix, and (n,d) in the power)]. 

X ((a,b) in suffix, and (n,d) in the power)-        X^(n,d) _ (a,b).

Actually I require many plots involving different values of a,b,n,d, so need to keep this complicated notation. 
The expression() didn't work out for this case. Can anyone help me out. 
Thanks, in advance.
Shant






uniroot(function(x) x*(3^x)*log(4)-x*log(4/3)-(3^x)+1, lower = -2, upper = 2, tol = 0.001 )

While using this I am getting the following error. Can anyone please help me out.
Error in uniroot(function(x) x * (3^x) * log(4) - x * log(4/3) - (3^x) +  :   f() values at end points not of opposite sign.

Thanks in advance.

Shant


      
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