find dy/dx
1) y=x^7/2
2) y= x^-3
3) y= ax^2 + bx + c
4) y= 3x^5 - 3x - 1/x
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1 ) 7/2x^5/2
2) -3x^-4
3) 2ax+b
4) 15x^4-3 +1/x^2
here all I m using formula Dy/DX (x^n) = nx^n-1
2) -3x^-4
3) 2ax+b
4) 15x^4-3 +1/x^2
here all I m using formula Dy/DX (x^n) = nx^n-1
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