Question

Please help me on elementary calculus, pretty pleasee! - Rachel

7. Find the intervals of concavity and inflection points for the function g(I) = 2x4 -8x° +127+12. 8. Evaluate the integrals. (m) [(x2 - 4 - 4x +13) da (b)(**) as

Answer 1

D) k (W): 224-8x3 +1222 +12% An inflection point is a point on graph at which second derivative changes sign. of firal so then f(a) is coneane upwards of fuoco then fins is concave downward Firstafall we need to find where of '(a) 20 or undefried H(X- (H)*° - 8 (3) 22 +12(2)(0) +12 fiw-82²- 242² +242 +12

We need to find f(a) where filajo k"cas 24x²-482 +24 het f(a)=0 24x²-48a +24=0 24 caz, 2x + 1) = 0 X2-2xt=0 x ²2-24 1:0 X CX-1)-1(x-1)=0 6-1) (x-1)=0 =) X1 the domain of fiul is ancaca No so the domain is -XCALI, ILALA

(2+b)"ax = (1D/3.0 61862 173 47897+ 4.656268804 [13407+6.99106572755478 + १.९5520167221351] २५.5583983871818 5 (0x346)bdu 24.5583983871848