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Find dy/dx in terms of t of the parametric equations x=4e^-2t, y=4 - 2e^2t

x=4e-2t, y=4-2e2t

dy/dx = dy/dt * dt/dx

dy/dt = -4e2t

dx/dt = -8e-2t           dt/dx = -1/8 * e2t

dy/dx = (-4e2t

JM
Answered by Josh M. Maths tutor
5236 Views

Mike, Sam and James play football. Mike scores 8 more goals than James. Sam scores 5 more goals than Mike. Altogether they score 72 goals. How many did Sam score?

Let James = x 

Mike = x+8

Sam = Mike+5 = (x+8)+5 = x+13

Altogether: James + Mike + Sam = 72

Therefore, x + (x+8) + (x+13) = 72

Now solve for x: 3x + 21 = 72

Bring...

JR
Answered by Joshua R. Maths tutor
3577 Views

Why did the Interregnum last only from 1649 till 1660?

Possible reasons for the short tenure could include:

- Parliament planned to disband the New Model Army which angered them, and forced them to take action

<...

RM
Answered by Rahman M. History tutor
3347 Views

How do I use critical quotes effectively in my exam?

At A Level you are expected to use different interpretations of your text in order to inform your discussion in the exam. These are supposed to HELP you to write a good essay and should not be a massive w...

MM
8224 Views

Write a Visual Analysis Essay of Uccello’s The Hunt (currently in the Ashmolean Museum, Oxford)

Example answer:

Uccello’s painting The Hunt in the Forest has a highly regular composition. The painting is constructed almost symmetrically using linear perspective. The hunters, their ho...

LK
4363 Views

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