Answer: You get an answer?
Step-by-step explanation:
To
answer this set of questions, all we have to do is just to substitute the value
of x in F(x) to the given f(x) equation.
By
substitution and following PEMDAS rule:<span>
F(-1)=2(-1)³-3(-1)²+7=5</span>
F(1)=2(1)³-3(1)²+7=6
F(2)=2(2)³-3(2)²+7=11
Therefore the answers
are 5, 6 and 11.
<span> </span>
Answer:
Answer B: -30
Step-by-step explanation:
Let B be as follows:
[-18 3]
[4 1 ]
To find the determinant, multiply diagonally <em>downward</em> from -18 through 1, obtaining -18. We keep this sign as is.
Continue: Start at 4 and move diagonally <em>upward</em> through 3; this product is 12. Because we moved upward, give this result the opposite sign: -12.
Now add together these two products; that is, add together -18 and -12. Here the sum is -30. This is the determinant of the matrix. It's Answer B.
Finding the determinant of a 3x3 matrix obviously requires more steps, but the general approach is similar.
