ขนาดวิดีโอ: 1280 X 720853 X 480640 X 360
แสดงแผงควบคุมโปรแกรมเล่น
เล่นอัตโนมัติ
เล่นใหม่
You can do the calculation starting at 3:30 also a bit differently: the sum n² x^n can be expressed as x d/dx (x d/dx sum x^n).
You are right. Your approach will give the same result. Thanks for your suggestion.
You can do the calculation starting at 3:30 also a bit differently: the sum n² x^n can be expressed as x d/dx (x d/dx sum x^n).
You are right. Your approach will give the same result. Thanks for your suggestion.