Uploaded March 2026 | Updated September 2026, 2 weeks ago
This is an algebra/precaluclus tutorial covering the method of finding the domain and the range of a quadratic function. In fact, the domain of a quadratic function is always (-inf, inf) since there is no restriction on x. But for the range, we have to find the vertex of the parabola first. Be sure you are familiar with the quadratic equation in the vertex form f(x)=a(x-h)^2+k and the standard form f(x)=ax^2+bx+c.
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#math #algebra #mathtutorials
0:00 f(x)=-(x+1)^2+3
2:48 f(x)=4(x-2)^2-12
3:44 f(x)=x^2+5x+11
6:39 f(x)=-2x^2+8x-3
This is an algebra/precaluclus tutorial covering the method of finding the domain and the range of a quadratic function. In fact, the domain of a quadratic function is always (-inf, inf) since there is no restriction on x. But for the range, we have to find the vertex of the parabola first. Be sure you are familiar with the quadratic equation in the vertex form f(x)=a(x-h)^2+k and the standard form f(x)=ax^2+bx+c.
------------------
I help students master the basics of math. You can show your support and help me create even better content by becoming a patron on Patreon 👉 patreon.com/blackpenredpen.
Or shop for math t-shirts & hoodies 👉 amzn.to/3qBeuw6
Every bit of support means the world to me and motivates me to keep bringing you the best math lessons! Thank you!
------------------
#math #algebra #mathtutorials
0:00 f(x)=-(x+1)^2+3
2:48 f(x)=4(x-2)^2-12
3:44 f(x)=x^2+5x+11
6:39 f(x)=-2x^2+8x-3
