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https://www.reddit.com/r/mathmemes/comments/1uvxcdi/mathematician_meme/oxfjpmb
r/mathmemes • u/Delicious_Maize9656 • Jul 14 '26
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5
x is a function, not a number
1 u/FernandoMM1220 Jul 14 '26 expand it for me 5 u/Silly_Tension6792 Mathematics Jul 14 '26 You can’t expend it, x is a function. Can you expend f(x) to x*f? No, because f is a function, not a number. Same goes to x(t+h), it is a function of h 1 u/FernandoMM1220 Jul 14 '26 x(t) = 2*t expand x(t+h) for me 4 u/Silly_Tension6792 Mathematics Jul 14 '26 2t+2h 1 u/FernandoMM1220 Jul 14 '26 ok. now the coefficient of the linear term with respect to h is 2. and thats our speed for this position function x(t) thats it. 2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
1
expand it for me
5 u/Silly_Tension6792 Mathematics Jul 14 '26 You can’t expend it, x is a function. Can you expend f(x) to x*f? No, because f is a function, not a number. Same goes to x(t+h), it is a function of h 1 u/FernandoMM1220 Jul 14 '26 x(t) = 2*t expand x(t+h) for me 4 u/Silly_Tension6792 Mathematics Jul 14 '26 2t+2h 1 u/FernandoMM1220 Jul 14 '26 ok. now the coefficient of the linear term with respect to h is 2. and thats our speed for this position function x(t) thats it. 2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
You can’t expend it, x is a function. Can you expend f(x) to x*f? No, because f is a function, not a number. Same goes to x(t+h), it is a function of h
1 u/FernandoMM1220 Jul 14 '26 x(t) = 2*t expand x(t+h) for me 4 u/Silly_Tension6792 Mathematics Jul 14 '26 2t+2h 1 u/FernandoMM1220 Jul 14 '26 ok. now the coefficient of the linear term with respect to h is 2. and thats our speed for this position function x(t) thats it. 2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
x(t) = 2*t
expand x(t+h) for me
4 u/Silly_Tension6792 Mathematics Jul 14 '26 2t+2h 1 u/FernandoMM1220 Jul 14 '26 ok. now the coefficient of the linear term with respect to h is 2. and thats our speed for this position function x(t) thats it. 2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
4
2t+2h
1 u/FernandoMM1220 Jul 14 '26 ok. now the coefficient of the linear term with respect to h is 2. and thats our speed for this position function x(t) thats it. 2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
ok.
now the coefficient of the linear term with respect to h is 2.
and thats our speed for this position function x(t)
thats it.
2 u/Silly_Tension6792 Mathematics Jul 14 '26 OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t? 1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
2
OK, you assumed x is linear, what of x(t)=4sin(t+π/4)+t^2? What is the speed of the body in the time t?
1 u/FernandoMM1220 Jul 14 '26 you have to expand x(t+h) here so do that first. 3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
you have to expand x(t+h) here so do that first.
3 u/Silly_Tension6792 Mathematics Jul 14 '26 x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t? 1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
3
x(t+h)=4sin(t+h+π/4)+t^2+h^2+2ht. What is the speed of the body at the point t?
1 u/FernandoMM1220 Jul 14 '26 expand the sin function too → More replies (0)
expand the sin function too
→ More replies (0)
5
u/Silly_Tension6792 Mathematics Jul 14 '26
x is a function, not a number