x5lnxx^5 ln xx5lnx' = 5x^4 ln x + x^4 = x^45lnx+15ln x + 15lnx+1
e(1−7x)e^(1-7x)e(1−7x)' = -7e^1−7x1-7x1−7x
cos0.2x−50.2x-50.2x−5' = -0.2sin0.2x−50.2x-50.2x−5
f'xxx = 1/x^2, f'111 = 1/1^2 = 1, so a = 1
f'xxx = 2x + 3, f'222 = 2222 + 3 = 4 + 3 = 7, so a = 7
x5lnxx^5 ln xx5lnx' = 5x^4 ln x + x^4 = x^45lnx+15ln x + 15lnx+1
e(1−7x)e^(1-7x)e(1−7x)' = -7e^1−7x1-7x1−7x
cos0.2x−50.2x-50.2x−5' = -0.2sin0.2x−50.2x-50.2x−5
f'xxx = 1/x^2, f'111 = 1/1^2 = 1, so a = 1
f'xxx = 2x + 3, f'222 = 2222 + 3 = 4 + 3 = 7, so a = 7