Question

The maximum value of is

a) ½ b) √3

2

c) 1 d) 1

√2
​

Answer 1

Step-by-step explanation:

If x∈R find the maximum value of

x4−3x2−6x+13−−−−−−−−−−−−−−−√−x4−x2+1−−−−−−−−−√

I tried this:

Let

y=x4−3x2−6x+13−−−−−−−−−−−−−−−√−x4−x2+1−−−−−−−−−√

For maxima dydx=0 and d2ydx2<0. However, the equation dydx=0 (after simplifying