Alright, so I am a thirteen year old trying to learn calculus (because what else am I going to do over summer. Hang out with friends? Don't be ridiculous.) Now, since I do not have access to a teacher (Because it's summer), I have been limited to the resources provided by the internet. And while they have been incredibly useful in helping me in my incredibly new efforts to learn calculus, there has been several contradictions. One of which has brought me to the point of asking for assistance.
Now, I'm doing the simple equation of 3z^7 - 7z^3 + 21x^2 . Isn't hard to do, the answer I got was 21z^6 - 21z^2 + 42z. Symbolab agrees with me on that one (it's a math site that gives you the steps to get to the answer). However, tkiryl (a site to give you math questions and the solutions) disagrees. Apparently I am supposed to apply the power rule twice (unless there's like a different name and I am just oblivious to it.) Which would give me an answer of 126z^5 - 42z + 42. Now as you can imagine, as a not-the-sharpest-tool-in-the-shed thirteen year old who can't get google to help him, I do not have any idea what is going on.
Any help is appreciated.
Now, I'm doing the simple equation of 3z^7 - 7z^3 + 21x^2 . Isn't hard to do, the answer I got was 21z^6 - 21z^2 + 42z. Symbolab agrees with me on that one (it's a math site that gives you the steps to get to the answer). However, tkiryl (a site to give you math questions and the solutions) disagrees. Apparently I am supposed to apply the power rule twice (unless there's like a different name and I am just oblivious to it.) Which would give me an answer of 126z^5 - 42z + 42. Now as you can imagine, as a not-the-sharpest-tool-in-the-shed thirteen year old who can't get google to help him, I do not have any idea what is going on.
Any help is appreciated.