If <em>x</em> = -1, you have
2(-1) + 3 cos(-1) + <em>e</em> ⁻¹ ≈ -0.0112136 < 0
and if <em>x</em> = 0, you have
2(0) + 3 cos(0) + <em>e</em> ⁰ = 4 > 0
The function <em>f(x)</em> = 2<em>x</em> + 3 cos(<em>x</em>) + <em>eˣ</em> is continuous over the real numbers, so the intermediate value theorem applies, and it says that there is some -1 < <em>c</em> < 0 such that <em>f(c)</em> = 0.
Use keep, change, flip!
Ex: 1 / 3
— —
2 4
Keep the 1/2
Change the division sign to a multiplication sign
Flip the 3/4 to be 4/3
1 X 4
— —
2 3
Then, multiple and simplify as usual!
1 X 4= 4
2 X 3= 6
4 = 2
— —
6 3
The answer would be 2
—
3
Hope this helps, brainliest please! :)
Answer: x = -7 ± 8i
Step-by-step explanation: Solve the euqation for x by finding a, b, and c of the quadratic then applying the quadratic formula
Hope this helps! :) ~Zane
Answer:
Step-by-step explanation: 1st coordinator
