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1 answer:
Let's solve the first inequality at first. So,
−2(x + 4) + 10 < x − 7
-2x- 8 + 10 < x - 7 By distribution property.
-2x + 2 < x - 7 Adding the like terms.
-2x < x - 7 - 2 Subtract 2 from each sides.
-2x < x - 9 By simplifying.
-2x - x < -9 Subtract x from each sides.
-3x < -9
Since we are dividing by negative 3. So, sign of inequality will get change.
So, x>3
Now the next inequality is,
−2x + 9 > 3(x + 8)
-2x + 9 > 3x + 24
-2x > 3x + 24 - 9
-2x > 3x + 15
-2x - 3x > 15
-5x >15
So, x <-3
Hence, the correct choice is x > 3 or x < −3.
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Answer:
Odd, Even
Step-by-step explanation:
A function is said to be an Even function if it follows f(-x) = f(x).
A function is said to be an Odd function if it follows f(-x) = -f(x).
It means we can plug -x in place of x and check if it comes out to be f(x) or -f(x) i.e. y or -y?
Given y = sin³x/cos³x and y = 1/sec³x
Hence, first function is Odd, second function is Even.