What is the derivative of f(x) = x(6^-2x)
1 answer:
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Answer:
D
Step-by-step explanation:
From the triangle inequality, we know that the two small sides must be greater than the largest side. Let's let x be the third side:
However, 15 can also be our largest side. So:
Let's solve for x for both inequalities.
First inequality:
Add:
Flip:
Second inequality:
Subtract 7 from both sides:
So, we have the compound inequality:
Combine:
Our answer is D
And we're done!