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Answers by Jim S.

complex analysis (answer)

If you expand each side you have x2+2ixy-x-y2+iy=0 now you can solve this equation as a quadratic which has two solutions.   Jim

Brianna,              6-x>15 so we are looking for any and all the numbers x that when subtracted from 6 are greater than 15. Lets try x=4 and see if that is a possible solution i.e. 6-4=2 and 2 is not greater than 15 so x=2 is not a possible solution. We...

bungee Jumping (answer)

Sarita,           The jumper's Kinetic energy 1/2m v2=mgh where h=42' and m=150/32.2 slugs at this point you have a moving mass starting to stretch a spring (assume linear) so the kinetic energy will be transferred to potential energy by stretching the spring so we have...

Nicole, You can attach your documents to a WyzAnt email.    Jim

If y=8/x then 2x+y=2x+8/x and as you can see when x is small and >0 this function is large and when x is really big and >0 this function is large again so somewhere in between this function has a minimum value. To find it you differentiate with respect to x and set the resulting function...

Hey Jammy,             Is this a trick question?? Usually the main reason is you want or need to know the answer..   Jim

Amanda,            Not sure why you want to rationalize the radical in the numerator?? You can find the limit as x→0 by applying l'Hopital's rule i.e. take the limit of the derivative of the numerator divided by the derivative of the denominator.  I got...

Stephanie,   The complex number z=-5-2i can be though of as a vector in 2 dimensions with an x component of -5 and a y component of -2. If you plot this point you will see that it falls in the third quadrant. To express this in polar form r,θ first calculate r=(52+22)1/2=5.38.....

Robert,         Assuming that the .88 probability is generally applicable to students in the particular term, and assuming test takings are independent events i.e the probability of me following instructions will not influence you following instructions. We can use the binomial...

You want to find integers p,q such that p+q=7 and p*q=3, if you plot q=7-p and q=3/p on the same graph and find out where the line and the curve intersect you will quickly find out there are no integer solutions.     Jim