Find the product of all integer values of which satisfy the inequality above.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
ln ( 2 x 2 − 3 x + 8 ) ≤ 2 ln ( x 4 + 4 x 3 + 8 x 2 + 8 x + 4 )
ln ( 2 x 2 − 3 x + 8 ) ≤ 2 ln ( x 2 + 2 x + 2 ) 2
The determinants of both the quadratics are negative, and the leading co-efficient is greater than 0, thus they are always greater than 0, and the logarithmic function is well defined.
ln ( 2 x 2 − 3 x + 8 ) ≤ ln ( x 2 + 2 x + 2 )
∴ 2 x 2 − 3 x + 8 ≤ x 2 + 2 x + 2
x 2 − 5 x + 6 ≤ 0
( x − 2 ) ( x − 3 ) ≤ 0
Drawing the wavy curve we get our interval as,
x ∈ [ 2 , 3 ]
The only integer values that satisfy this are 2 , 3
2 ⋅ 3 = 6
Pardon my weirdly drawn wavy curve.