The answer is D from picture you posted .
Answer:
A
Step-by-step explanation: just divide 71 into 2 which gives you 35.5 making a your answer.
First, replace all variables with the given values.
12(9) + 9(2) + 2(12)
This should then equal 150, then the formula says to multiply this answer by 2. Doing so, should give a final answer of 300.
Use the chain rule to compute the second derivative:

The first derivative is


Then the second derivative is


Then plug in π/4 for <em>x</em> :
