SOLUTION: please help me solve this equation. Find f(x + h) when f(x) = -3x+5 over 7x+4

Question 1044841: please help me solve this equation. Find f(x + h) when f(x) = -3x+5 over 7x+4
Found 2 solutions by MathLover1, Boreal:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Find when

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
f(x+h)=-3(x+h)+5/7(x+h)+4
That is -3x-3h+5/(7x+7h+4)
If they want f(x+h)-f(x)
-3x-3h+5/(7x+7h+4)-(-3x+5)/(7x+4); common denominator is (7x+7h+4)(7x+4)
The numerator is (-3x-3h+5)(7x+4)-(-3x+5)(7x+7h+4)
=-21x^2-12x-21xh-12h+35x+20-(-21x^2-21xh-12x+35x+35h+20)
=-21x^2-12x-21xh-12h+35x+20+21x^2+21xh+12x-35x-35h-20
=-47/[7(x+h)+4](7x+4)
=-47/(7x+4)^2 as h approaches 0. This is the derivative.

RELATED QUESTIONS
Please help me solve this equation: f(x) =x -1, h(x) = x+3/3 Find (f+h) (-4). (f... (answered by josgarithmetic)
Please help me solve this equation: f(x)=4-x^2 using f(x+h)-f(x)/h thank you (answered by solver91311)
please help me solve this equation :... (answered by solver91311)
Please help me with this problem. find the difference quotient of f, that is, find... (answered by josgarithmetic)
find f(x + h), when f(x) = -3x + 5 / 7x +4 (answered by Fombitz)
please help me with this problem f(x) 4x+7 over 7x-4; g(x) x over 7x-4 and find this... (answered by Alan3354)
Find the value for the function find f(x+h) when f(x)= -3x+5 over 7x+4 (sorry, not... (answered by math_helper)
please help me solve this equation: {{{f(x)=-x^2-3x+5}}}... (answered by tutorcecilia)
When f(x) = 2x to the -1, g(x)= 2x + 5 and h(x) = x-4 over 2....... can you help me solve (answered by stanbon)