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Factorise X^2-X-20

(X+4)(X-5)

Answered by Stephen W. Maths tutor
2836 Views

Solve the following simultaneous equations: 3x+y=11, 2x+y=8

x=3, y=2

Answered by Reuben S. Maths tutor
2375 Views

Problem of Optimisation: A company is designing a logo. The logo is a circle of radius 4 inches with an inscribed rectangle. The rectangle must be as large as possible.

First, draw a diagram showing the rectangle, the circle and the unknowns . Then find the equations representing this problem (equation of a circle of center 0, x2 +y2=42 ...

Answered by Maths tutor
6219 Views

How do you integrate ln(x) ?

-First write the integral with ln(x) and form a product of 1 next to it-Let u=ln(x) and differentiate this-Let dv/dx= 1 and integrate this-Substitute values into integration by parts formula-Simplify and ...

Answered by Maths tutor
2622 Views

Find the first derivative of f(x). f(x) = ln(3x^2+2x+1)

The differential of a natural log function gives a fraction where the numerator is the first derivative of what we are taking the natural log of and the denominator is what we are taking the natural log o...

Answered by Maths tutor
3295 Views

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