a very hard math equation
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Question:5x^-2y^10 over 2x^-1(-3x^-3y^-1)^-2
Question:y = x^2 + x + 11
The value of y is a prime number when x = 0 , 1 , 2 , 3
The following statement is NOT true..
'y= x^2 + x + 11 is ALWAYS a prime number when x is an interger'
show that the statement is not true!
PLEASE HELP NEEDED
Answers:All you need is a counter example. For example, try x = 10.
y = 10 + 10 + 11
y = 121
121 is 11 which is not prime.
Question:f(x) = 2x2 + 3x 2.
(a) Solve the equation f(x) = 0.
(b) Sketch the curve with equation y = f(x), showing the coordinates of any
points of intersection with the coordinate axes.
(c) Find the coordinates of the points where the curve with equation y = f( 1/2 x)
crosses the coordinate axes. (3)
When the graph of y = f(x) is translated by 1 unit in the positive x-direction it maps
onto the graph with equation y = ax^2 + bx + c, where a, b and c are constants.
(d) Find the values of a, b and c.
Answers:a (2x-1)(x+2) x = -2 or 1/2
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