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Find the x co-ordinates where the curve y=x+1 and y= x^2 +1 cross?

As they both equal y these 2 terms can be equated to each other.x+1 = x^2+1We can re-arrange this new equation, and solve for x.This equals: 0 = x^2 - xsolve for x:0 = x(x-1)so x = 1, 0.

MB
Answered by Michael B. Maths tutor
2614 Views

Find the integral of: sin^4(x)*cos(x)dx

This is a standard integral of the type f'(x)*f(x)n. To find the solution, we trial d/dx(f(x)n+1). d/dx(sin5(x)) = 5sin4(x)cos(x). this looks similar to the int...

Answered by Maths tutor
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Solve the Simultaneous Equation: 7x + 8y = 32, x - 4y = 8

7x + 8y = 32 (let this be equation [1])x - 4y = 8 (let this be equation [2])
Make x the subject in equation [2] => x = 8 +4y (let this be equation [3])Sub [3] into [1]
7x + 8y = 32 => 7(8 ...

BC
Answered by Bradleey C. Maths tutor
3785 Views

( 9x3) + (18 /3)

(9 x 3) + (18 / 3)
BIDMASBracketsIndicesDivideMultiplyAddSubtract
Br...

SB
Answered by Sarah B. Maths tutor
2734 Views

Factorise x^2 +2x+1 to the form (x+a)(x+b)

To factorise a quadratic of this form find a pair of numbers which multiply to produce the last term and add to make the middle term.In this case 1x1 = 1 and 1+1=2 so a and b will be the same number.(x+1)...

MA
Answered by Mohammed A. Maths tutor
2514 Views

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