tentukan gradien garis singgung setiap
kurva berikut ini , pada nilai x yang diberikan
a. y= 3x^2-2, di x=3
b. y=x^2+7x-4, di x=-3
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jawab:
gradiennya = m = y'
y' = 6x .....x=3
m = 6.3 = 18
b. y=x^2+7x-4, di x=-3
y' = m = 2x +7
m = 2(-3) +7
m = -6 + 7
m = 1