Top answers

How do you find the gradient of a linear line just by looking at the graph?

When finding the gradient of a line we need to first locate any two points, on the line, where we know the x-coordinates and we know the y-coordinates. Now, with these two coordinates we need to find two val...
JS
Answered by Jozef S. • Maths tutor
3415 Views

What is the coefficient of the x^3 term in the binomial expansion of (2x+(1/3x^2))^9

512
AW
Answered by Andrew W. • Maths tutor
4009 Views

Find f^-1(x) for the following equation: f(x) = (12+x)/3

f -1 (x) is equivalent to the inverse of the function f(x). To solve the inverse of a function, a series of steps must be followed: 1) Write out the equation x = f(y ) This in effect is replacing all x's of ...
BW
Answered by Bethany W. • Maths tutor
3907 Views

Complete the indefinite integral : ∫x lnx dx

Use the formula: ∫uv' dx = uv - ∫u'v dx (use I = the integral we're looking for)Note we cant integrate ln x easily but we can differentiate into 1/x so we use:u = ln x and v' = x we have u' = 1/x and v = x 2...
KD
Answered by Katy D. • Maths tutor
6745 Views

Solve the simultaneous equations: y - 3x + 2 = 0 y^2 - x - 6x^2 = 0

y = 3x -2(3x-2) 2 - x - 6x 2 = 0 9x 2 - 12x + 4 - x - 6x 2 = 03x 2 - 13x + 4 = 0(3x - 1)(x-4) = 0 x = 1/3 or x = 4then y = -1 when x = 1/3 and y = 10 for x = 4
KD
Answered by Katy D. • Maths tutor
10501 Views