Friday
April 18, 2014

Homework Help: Maths

Posted by Anonymous on Wednesday, February 18, 2009 at 11:24am.

1. Sketch the curves y=e^x and y=e^-2x, using the same axes. The line y=4 intersects the first curve at A and the second curve at B. Calculate the length AB to two decimal places.

2. Find the coordinates of the turning point on the curve y=2e^3x+8e^-3x and determine the nature of this turning point.

For 1, I have sketched the curves, but i'm not sure how to find the length. I thought I could do y=y to find the x co-ordinates (and use those as my limits) for each but I don't know how to find them out with e^x.

For 2, I differentiated it to get y=6e^3x-24e^-3x and don't know what to do after that.

Please help. Thanks in advance for any help!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

calculus - The line y+x=9 intersects the curve y=x^2-2x+3 at the points P and Q...
Business Statistics - In each case, sketch the two specified normal curves...
Statistics - Suppose that the probability distribution of a random variable x ...
Math - 1. The curve y=10/2x+1 -2 intersects the x-axis at A. The tangent to the ...
Statistics - Suppose that the probability distribution of a random variable x ...
Math - The line 2x+3y=1 intersects the curve x(x+y)=10 at A and B. Calculate the...
Calc. - sketch the curve using the parametric equation to plot the points. use ...
calculus - The region A is bounded by the curve y=x^2-5x+6 and the line y = -x...
Calculus - The line that is normal to the curve x^2=2xy-3y^2=0 at(1,1) ...
MATH - THE LINE Y=X+4 INTERSECTS THE CURVE 2X^2 + 3XY - Y^2 + 1 = 0

Search
Members