Thread: solving by graphing

solve the equation graphically in the given interval. state each answer correct to two decimals.

16x^3+16x^2=x+1 ; [-2,2]

get out your graphing calculator ...

graph the function

y1 = 16x^3 + 16x^2 - x -1

calculate the x-intercepts (zeros) in the given interval.

Originally Posted by Heather10

solve the equation graphically in the given interval. state each answer correct to two decimals.

16x^3+16x^2=x+1 ; [-2,2]

Now, draw the graph f(x) = 16x^3 + 16x^2 and f(x)= x+1

The solution graphically is

(- 1, 0), (- 0.25, 0.75), (0.25, 1.25)