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A curve C is defined by the parametric equations x=(4-e^(2-6t))/4 , y=e^(3t)/(3t), t doesnt = 0. Find the exact value of dy/dx at the point on C where t=2/3 .

To solve this we must use the chain rule which is dy/dt * dt/dx. Firstly, we differentiate dy/dt. For this we must use the quotient rule, this gives us dy/dt=(9te^3t - 3e^3t)/9t^2. Now for dx/dt, by substitu...
LK
Answered by Lauren K. • Maths tutor
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Balance the equation and write the products of the following reaction for complete combustion: CH4 + O2 ---> _ + _

Student should know complete combustion produces CO 2 and H 2 O Once products are known, equation can be balanced as: CH 4 + 2O 2 ---> CO 2 + 2H 2 O
AR
Answered by Adam R. • Chemistry tutor
3168 Views

What is electronegativity?

Simple definition: Electronegativity is the tendency of an atom to attract a bonding air of electrons to itself
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Answered by Adam R. • Chemistry tutor
3436 Views

Find the roots of the following equation: x^2 + x - 6 = 0

Student should factorise equation to (x-2)(x+3) = 0 This gives roots of 2 and -3
AR
Answered by Adam R. • Maths tutor
2222 Views

How do I explain the process of Natural Selection?

VOSSAG V - Variation: all organisms undergo varying amounts of genetic variation due to genetic mutations or environmental factors (such as geographic separation). O - Overpopulation: all populations have th...
BK
Answered by Ben K. • Biology tutor
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