Find the Maximum or minimum function value of
f(x)=7.6x^2+9.8x+2.1
PLEASE HELP ME
2006-07-01 15:15:28 · 4 answers · asked by yasmine o 1 in Education & Reference ➔ Higher Education (University +)
Right, and the answer is -161/152
2006-07-01 16:45:18 · answer #1 · answered by R@inY 3 · 1⤊ 0⤋
This is a calculus problem.
Take the first derivative (which is 2*7.6*X + 9.8) and set it equal to zero. This happens at -0.64474
This will be a minimum. You cn tell because the second derivative is positive.
If none of this means anything to you & you are taking a precalculus algebra class, then there is another way to find it. You have to complete the square on the right hand side -- so that it looks like (aX+b)^2 + c. Setting aX+b equal to zero also gives you the answer.
2006-07-01 18:14:46 · answer #2 · answered by Ranto 7 · 0⤊ 0⤋
set f(x)=y on the calculator to graph it and then use calc to find teh maximum or minimum. Or you could find the derivative of f(x), set it equal to zero, solve for x, take the x value and plug it into the original f(x) to get your answer. Either way would work
2006-07-01 16:18:11 · answer #3 · answered by surferchick1309 1 · 0⤊ 0⤋
I am not sure what you are asking here, I do know a little about this and usually a number is given to replace x that would look like f(0) and then you would replace the x values with the number. I hope that helps.
2006-07-01 15:22:49 · answer #4 · answered by cherrypie p 3 · 0⤊ 0⤋