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Solve this math problem?
c = -0.0381875
dy/dx = .00401382x^2 - 0.38x + 7.9153
the slope of the tangent of the function at x= 25 is .092393
y when x is 25 is the number of followers I’m celebrating. When y is 192 is the number of followers I have at the moment (bonus!)
how many followers does he have?
2 Answers
- 8 years agoFavorite Answer
take anti derivative of 0.00401382x^2 - 0.38x + 7.9153
y(x) = (0.00401382/3)x^3 - (0.38/2)x^2 + 7.9153x + c
y(x) = 0.00133794x^3 - 0.19x^2 + 7.9153x - 0.0381875
y(25) = 0.00133794(25^3) - 0.19(25^2) + 7.9153(25) - 0.0381875
y(25) = 99.999625
...
0.00133794x^3 - 0.19x^2 + 7.9153x - 0.0381875
x^3 - 142.009357669x^2 + 5916.03509873x - 28.5420123473 = 192
ill let you solve this equation and add it on to y(25) and i believe you'll have your answer
- ?Lv 58 years ago
Maybe you can rewrite this and use meaning full sentences. " y when x " what does that mean? FIND y when x = 25? And are you asking for someone to integrate dy/dx? do you know that's a derivative?
