It’s should 5x^2+7x+3 in standard form
It's hard to type and hard to read the "inverse tangent" function, as you've seen (above).
So, use "arctan x" instead.
Then the problem becomes: "differentiate cos (arctan x)."
You must apply first the rule for differentiating the cosine function, and next apply the rule for differentiating the arctan function:
(d/dx) cos (arctan x) = - sin (arctan x) * [1/(1+x^2)]
Answer:
x = 34
Step-by-step explanation:
4x - 10 + x + 20 = 180
5x + 10 = 180
5x = 170
x = 34
2.16666... -Meters Per Second
About 4.8467- Miles Per Hour
About 7.8- Kilometer Per Hour
Make the denominators equal by multiplying them:
Subtract:
Simplify:
The answer is
or 0.16
