The derivative of a constant is 0. The derivative of x^9 + X^2 +1 is 9x^8 + 2x. The derivative of 9x^8 + 2x is 72x^7 + 2.
hello..is this question correct?
find the derivative of F(x): x^9 + X^2 +1
using the power law i got: 9x^8 + 2x +1
now the derivative of a sum:
(derivative of 9x^8) + (derivative of 2x) + 1
answer:
72x^7+252x^6 y +504x^5 y^2 +630x^4 y^3 +504x^3 y^4 +252x^2 y^5 +72x y^6 +y^7 +3.
where y=delta X. as y approaches to 0.
final answer: 72x^7 +3
is it correct?? we dont know how to prove it with integration...we'll know it later...tks