Because f(1,1)=1, we start by considering the base case for the function f when n=1 and m is any positive integer:
For m=1, we have f(1,1)=1.
Using the second condition, we recursively find f(m,1):
f(m+1,1)=2f(m,1)=2(2f(m−1,1))=⋯=2m⋅f(1,1)=2m.
This allows us to establish that:
f(m,1)=2m−1.
Now, using the first condition, we can iteratively calculate f(m,n) where n>1:
f(m,n+1)=f(m,n)+2.
Repeatedly applying this condition starting from f(m,1) for any specific m, we get:
f(m,2)=f(m,1)+2=2m−1+2,f(m,3)=f(m,2)+2=2m−1+4,⋮f(m,n)=2m−1+2(n−1).
Thus, in general, we can represent f(m,n) as:
f(m,n)=2m−1+2(n−1).
Applying this formula to find f(2010,2011), we obtain:
f(2010,2011)=22010−1+2(2011−1)=22009+2⋅2010.
Since 22009 is equal to 22010÷2, we can write:
f(2010,2011)=222010+4020=22009+4020.
But we need this value in terms of 22010 to match the answer choices, so multiplying both terms in the sum by 2 we get:
f(2010,2011)=22010+2⋅4020=22010+4020+2