d)
Product rule:
Chain and power rules:
Power rule:
Now simplify.
e)
Quotient rule:
Power rule:
Now simplify.
f)
Chain rule:
We can further simplify this to
using the double angle identity for sine.
Area of a square = Length x Length
Area = 15.4 x 15.4 = 237.16 miles²
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Answer: 237.16 miles²
Answer:
2×2=4
Step-by-step explanation:
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Answer:
Given 7b²-21b-273=7, the solutions are x1 = 8 and x2 = -5.
Step-by-step explanation:
Given 7b²-21b-273=7, first you need to equal zero. So
7b²-21b-273-7=0 ⇒ 7b²-21b-280 = 0
The secon step is to find the solutions applying Bhaskara´s formula x = (-b ± √(b²-4×a×c))/2×a
Where a=7, b= -21 and c= -280
After you identified each term, you have to replace it on the formula so....
x = (21 ± √(21² - 4×7×(-280)))/2×7 ⇒ x = (21 ± √(441 + 7840))/14 ⇒ x = (21 ± √8281)/14
Then you will obtain two values for x, called x1 = 8 and x2=-5.