y = 4x^2 + 3x
y ` = (4x^2 + 3x) ` = 8x + 3
y = (5x-3)^3
y ` = ((5x-3)^3) ` = 3(5x-3)^2 × (5x-3) ` = 3(5x-3)^2 × 5 = 15(5x-3)^2
y = cos^4x
y ` = (cos^4x) ` = (-sin^4x) × (4x)` = (-sin^4x) × 4 = -4sin^4x
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y = 4x^2 + 3x
y ` = (4x^2 + 3x) ` = 8x + 3
y = (5x-3)^3
y ` = ((5x-3)^3) ` = 3(5x-3)^2 × (5x-3) ` = 3(5x-3)^2 × 5 = 15(5x-3)^2
y = cos^4x
y ` = (cos^4x) ` = (-sin^4x) × (4x)` = (-sin^4x) × 4 = -4sin^4x