Which of the following statements about the polynomial function
f(x) = x + 2x^2 - 1 is true?
x
x
→ 00, f(x) →-00
→-00, f(x) -
x →0, f(x) > 0
x → -00, f(x) →-00
o
c. f(x) has 1 relative minimum and 0 relative maximums
o
d. f(x) has 0 relative minimums and 1 relative maximum

it's d

step-by-step explanation:

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)

c

step-by-step explanation: