find
+
(b) If y = 6x® + 5x* + 4x + 3x² + 2x + 1
dy/dx
Answers
Answered by
0
Answer:
Given
y=x
3
−x
2
−x+7
Differentiating it w.r.t x
dx
dy
=3x
2
−2x−1
dx
dy
=0 [Given]
3x
2
−2x−1=0
3x
2
−3x+x−1=0
3x(x−1)+1(x−1)=0
(3x+1)(x−1)=0
x=1,
3
−1
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