A) y=3x⁵ - <u>1 </u> - ⁵√x = 3x⁵ - x⁻⁵ - x¹/⁵
x⁵
y' = 3*5x⁴ - (-5)x⁻⁶ - (1/5) x⁻¹/⁵⁻⁵/⁵ =15x⁴ + 5x⁻⁶ - (1/5)x⁻⁴/⁵ =
=15x⁴ + <u> 5 </u> - <u> 1 </u>
x⁶ 5 ⁵√x⁴
б) y=2√(4x+3) - <u> 3 </u>
√(x³+x+1)
y' = <u> 2*4 </u> - <u> 3(3x²+1) </u>= <u> 4 </u> - <u> 9x² +3 </u>
2√(4x+3) 2√(x³+x+1) √(4x+3) 2√(x³+x+1)
B2 = b1 * q
b7 = b1 * q^6
b7 / b2 = q^5
16 / 0,5 = q^5 --> 32 = q^5 --> q = 2
b1 = b2 / q = 0,5 / 2 = 0,25
дальше находим нужные члены:
b3 = b1 * q^2 = 0,25 * 4 = 1
b4 = b1 * q^3 = 0,25 * 8 = 2
b5 = b1 * q^4 = 0,25 * 16 = 4
b6 = b1 * q^5 = 0,25 * 32 = 8
1-cosa sina·sina/cosa =1-sin²a =cos²a