Charles bought 7/8 foot of electrical wire and 5/6 foot of copper wire for his science project. What is the least common denomin
2 answers:
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The first equation gives
Differentiating with respect to gives
for some constant . So
and by the fundamental theorem of calculus,
<u>ANSWER</u>
The vertex form is
<u>EXPLANATION</u>
We use completing squares
We factor -4 out of the first two terms
We add and subtract , that is coming from,
.
The expression in the first parenthesis is now a perfect square.
The function is now in the form,
, where
is the vertex
Hence the vertex is