₦airaland Forum

MrOlai:
What is the greatest y value of the function:


1/(12x² - 6x + 5) ?

= 0.25

mustapha112:
Why are you not replying have i offended you.please comment on it.

Wrong

Desyner:
= 0.25

No

MrOlai:
No

Its inverse then. 4.

Desyner:
Its inverse then. 4.

No

which topic is this question?

mustapha112:
which topic is this question?

Graph of Quadratic Functions

y=1/5

mustapha112:
y=1/5

Wrong

can you give me another question.

0.235

IukkyAitee:
0.235

Wrong

4.1x10^-4 + 1.435x10^-5i

-(4.7x10^-5 + 2.4x10^-4i)

y is the subject of the formular the equation cannot be factorise.(12x^2-6x+5)it is an imaginary root.therefore we cannot get the root of the equation.while 1/imaginary root.because there is no value for x like from -2 to 4.if y=1/(imaginary root) the greatest value for y cannot be determined.

mustapha112:
y is the subject of the formular the equation cannot be factorise.(12x^2-6x+5)it is an imaginary root.therefore we cannot get the root of the equation.while 1/imaginary root.because there is no value for x like from -2 to 4.if y=1/(imaginary root) the greatest value for y cannot be determined.

I think the question requires you to plot a graph and determine the required value of y from it.

the maximum value of y=5 while the minimum value for y=-5.the given imaginary root is x=-1.7and x=1.7

IukkyAitee:
4.1x10^-4 + 1.435x10^-5i

-(4.7x10^-5 + 2.4x10^-4i)

Wrong

mustapha112:
y is the subject of the formular the equation cannot be factorise.(12x^2-6x+5)it is an imaginary root.therefore we cannot get the root of the equation.while 1/imaginary root.because there is no value for x like from -2 to 4.if y=1/(imaginary root) the greatest value for y cannot be determined.

Wrong

mustapha112:
the maximum value of y=5 while the minimum value for y=-5.the given imaginary root is x=-1.7and x=1.7

Wrong

derivative is -(24x-6)/(12x^2-6x+5)^2, equating this to zero, x=1/4 and y max.=4/17. Got the same using x= -b/2a. Am I getting something wrong??

Mechanics96:
derivative is -(24x-6)/(12x^2-6x+5)^2, equating this to zero, x=1/4 and y max.=4/17. Got the same using x= -b/2a. Am I getting something wrong??

Well done!

You tried! Answer is: y =¹⁷/₄

You got the x coordinate perfectly!

Kudos!

MrOlai:
Well done!

You tried! Answer is: y =¹⁷/₄

You got the x coordinate perfectly!

Kudos!

next question pls

MrOlai:
Well done!

You tried! Answer is: y =¹⁷/₄

You got the x coordinate perfectly!

Kudos!

Modified

afo7219:
next question pls

Ok

afo7219:
next question pls

How many different groups of 6 children can be chosen from a class of 18 children if the class contains one set of twins who must not be separated?

since 2 people(twins) must always be in the group, therefore we have 18-2 =16 more people to chose 4 from. The twin will always join any group of 4 formed to make it 6. So 16C4 =1820

Mechanics96:
since 2 people(twins) must always be in the group, therefore we have 18-2 =16 more people to chose 4 from. The twin will always join any group of 4 formed to make it 6. So 16C4 =1820

Wrong.

3 must not be seperated

mustapha112:
3 must not be seperated

3?? A set of twin is 3?

Mechanics96:
3?? A set of twin is 3?

Lol

what is the meaning of lo.am i wrong?

Considering the fact that the twin may or may not be in the group, I think; 16C4 or 16C6 =1820+8008= 9828