let for x belongs to R the max value of 8x² "-8x" +7/4x²-4x+3 the value of [k] is (where [.] denotes greatest integer function)
Answers
Answered by
1
Answer:
=1
Step-by-step explanation:
Let f(x)=x
4
−8x
3
+18x
2
−8x+2
Substituting x=2+
3
, we get
f(2+
3
)=(2+
3
)
4
−8(2+
3
)
3
+18(2+
3
)
2
−8(2+
3
)+2
=(2+
3
)
2
((2+
3
)
2
+18)−8(2+
3
)((2+
3
)
2
+1)+2
=(7+4
3
)(4
3
+25)−8(2+
3
)(8+4
3
)+2
=175+48−128−96+2
=1
Similar questions