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| When performing `Solve[30000 == 25000 E^(k 10),k]` I am getting a complex number as an answer. However when I enter Log[30000/25000]/10 I get the expected answer, which does not include a complex number and can not understand why - see attached? ... |
| Thank you so much and I understand exactly what you are saying about actually calculating the values of c1 and c2. However I was actually trying to figure out a way to circumvent the necessity of performing the calculations for the following... |
| When I add two 2-dimensional vector groups together, I get the desired results of two groups. However, when I add three 3-dimensional vector groups together, it appears that each individual group appears as a group - see attached. I am expecting... |
| It seems that the only way that I can calculate the attached notebook is by first going into "Evaluate" and then selecting "Quit Kernel" then selecting "Local" and finally press the "Enter" key on my number pad. If I later press the "Enter" key on... |
| Hi; In using the RegionPlot3D command to print a hemisphere of radius 3 using spherical coordinates, I end up with something that looks sort-of like a rectangle (see attached). It seems that if you use rectangular coordinates you can create a... |
| In using the CoordinateTransformData[] and CoordinateTransform[] commands I get totally different results from what I expect (see attached), and I can not understand why. In reviewing the documentation, it appears that I am using the commands for... |
| Hi In using the Solve[] and the ArcCos[], I am getting sort-of two different answers (see attached) and cannot understand why. Would someone please explain to me why, in solving for Phi, I am getting different answers? The desired answer is Pi/4... |
| When I hover over the Plot command and select the chevron, I see the dropdown that shows the various template options. However, when I use my mouse to click on an option, my cursor ends up at the end of the Plot command without a template. I am... |
| Thanks so much, your explanation helps a lot. However, how would you plot the region of the integral if you wanting to integrate something more than just "1" (for volume). Say for example instead of integrating 1 you were integrating 3*y. How... |
| Please see attached Mathematica file. The calculated answer when I perform the calculations manually is 9, which is substantially different than the answer that I am getting from Mathmatica. I even broke the double integral down into two single... |