2
Question
If A=⎡⎢⎣204628246⎤⎥⎦,B=⎡⎢⎣84−20−20226⎤⎥⎦ and C=⎡⎢⎣8200−2−6−84−10⎤⎥⎦Compute A−B−C
If A=⎡⎢⎣204628246⎤⎥⎦,B=⎡⎢⎣84−20−20226⎤⎥⎦ and C=⎡⎢⎣8200−2−6−84−10⎤⎥⎦
Compute A−B−C
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Solution
A−B−C=⎡⎢⎣204628246⎤⎥⎦−⎡⎢⎣84−20−20226⎤⎥⎦−⎡⎢⎣8200−2−6−84−10⎤⎥⎦=⎡⎢⎣2−8−80−4−24+2−06−0−02+2+28−0+62+2+84−2−46−6+10⎤⎥⎦=⎡⎢⎣−14−66661412−210⎤⎥⎦
A−B−C=⎡⎢⎣204628246⎤⎥⎦−⎡⎢⎣84−20−20226⎤⎥⎦−⎡⎢⎣8200−2−6−84−10⎤⎥⎦
=⎡⎢⎣2−8−80−4−24+2−06−0−02+2+28−0+62+2+84−2−46−6+10⎤⎥⎦
=⎡⎢⎣−14−66661412−210⎤⎥⎦
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