Mathematics
If the area of the region $\begin{cases}(x,y):\frac{a}{x^2}≤ y ≤\frac{1}{x},1≤x≤2,0 < a < 1 \end{cases}$ is ${(log_e2)}-\frac{1}{7}$ then the value of $7a-3$ is equal to
A
2
B
-1
C
1
D
0
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