1. The following simultaneous equation solving 3x+4y-7z-12w 4 5x-7y+4z+ 2w -3 x+8z- 5w 9-6x+5y-2z+10w -8 2. M write file output " narcissistic number." (Narcissistic number refers to a 3-digit number, the digits of its cube is equal to the number itself. For example 153 13+53+33) 3. Known sphere function can produce spherical surface coordinate (1) drawn with a reticulated mesh function chart (2 ) drawn with surf function ball surface map (3) removal of a portion of the ball surface map,

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1\t8_1.m
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