Lecture 1: Vectors
div]:rotate-90 data-[direction=vertical]:before:inset-x-0 data-[direction=vertical]:before:top-1/2 data-[direction=vertical]:before:h-px data-[direction=vertical]:before:w-full data-[direction=vertical]:before:-translate-y-1/2 data-[direction=vertical]:before:translate-x-0 cursor-col-resize max-md:hidden!" id="s10" role="separator" data-direction="horizontal" data-pane-group-id="s8" data-enabled="true" data-pane-resizer-id="s10" data-pane-resizer="" tabindex="0" style="cursor: ew-resize; touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;">