JAMB - Mathematics (1982 - No. 7)
The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves
y = x3 and y = 3x2 + x - 28
y = x3 + 3x2 + 4x + 4 and the line y = \(\frac{28}{x}\)
y = x3 + 3x2 + 4x and y
y = x2 + 3x + 4 and y = \(\frac{28}{x}\)
y = x2 + 3x + 4 and line y = 28x
Forklaring
The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves
y = x2 + 3x + 4 and y = \(\frac{28}{x}\)`.
y = x2 + 3x + 4 and y = \(\frac{28}{x}\)`.