Dasher spent half as much as prancer did on holiday presents this year and cupid spent 3 times more than dasher. If the total sp
1 answer:
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Answer:
Step-by-step explanation:
Given;
(a) y = tan(5t)
Solving for (a)
y = tan(5t)
let u = 5t
⇒y = tan(u)
du/dt = 5
dy/du = sec²u
Solving for b;
let u = 5 - v²
du/dv = -2v
let v = 5+ v²
dv/du = 2v
First off, we factor out the expression:
In the bracket, separate 8 out of the expression.
In x^2-6x, find the third term that can make up or convert it to a perfect square form. The third term is 9 because:
So we add +9 in x^2-6x.
Convert the expression in the small bracket to perfect square.
Since we add +9 in the small bracket, we have to subtract 8 with 9 as well.
Then we distribute 2 in.
Remember that negative multiply positive = negative.
Hence the vertex form is y = 2(x-3)^2-2 or first choice.