Let vectora=-4i+3j-alphak, vector b=2i+alphaj+k and vectorc=5i-j+alphak, where alpha is a real number. Show that the vector c is not in the space spanned by vectors a and b. Pls help

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since alpha is unknown v cn't v shw that it has non zero determinant. isnt t?

for 2 values of alpha the matrix becoes zero. then hw do v shw?

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