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Express the following in partial fractions: (x^2+4x+10)/(x+3)(x+4)(x+5)

(x^2+4x+10)/(x+3)(x+4)(x+1) = A/(x+3) + B/(x+4) + C/(x+1) [A(x+4)(x+1) + B(x+3)(x+1) + C(x+3)(x+4)]/(x+3)(x+4)(x+1) = (x^2+4x+10)/(x+3)(x+4)(x+1) [A(x+4)(x+1) + B(x+3)(x+1) + C(x+3)(x+4)] = (x^2+4x+10) A(...

AS
Answered by Alessandro S. Maths tutor
3080 Views

Describe how oxygen in the air reaches capillaries surrounding alveoli in the lungs. Details of breathing are not required. (AQA Biol. 2016)

Oxygen diffuses from the air where it is present at a higher concentration and pressure, to the lungs where it is at a lower concentration and pressure - we say it moves 'down' these gradients; high to lo...

DM
Answered by David M. Biology tutor
4538 Views

Curve D has equation 3x^2+2xy-2y^2+4=0 Find the equation of the tangent at point (2,4) and give your answer in the form ax+by+c=0, were a,b and c are integers.

Differentiate the equationdy/dx=6x+2x(dy/dx)+2y-4y(dy/dx)Set this equal to zero and solve for dy/dx which gives:dy/dx=(2y+6x)/(4y-2x)For x=2 and y=4 dy/dx=5/3(y-yo)=m(x-xo)y-4=(5/3)(...

VD
Answered by Vasileios D. Maths tutor
5264 Views

Integrate 3x^2 + 4/3 x^5 with respect to x

3x3 /3 + 4x6/(6x3) = x3 + 2x6/9 + c

EB
Answered by Ellis B. Maths tutor
3644 Views

State Newton's Law of Gravitation

The gravitational force between two masses is directly proportional to the product of the two masses and inversely proportional to the square of the distanc...

EB
Answered by Ellis B. Physics tutor
2224 Views

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