You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
inverse functions
- Thread starter abcdgirl
- Start date
Your typing is a bit difficult to follow...abcdgirl said:...1/4y-3/4=x ...
is that (1/4)y - 3/4 = x?
If so, then: y/4 - 3/4 = x ; y - 3 = 4x ; y = 4x + 3 which means slope=4 and y-intercept=3 ; got that?
abcdgirl said:Need help graphing inverse functions. for ex. graphing 1/4y-3/4=x this is f-1(x) while f(x)=4x+3
what is the inverse of f(x)=square root of x +1 (small 3 outside the square root
Hi abcdgirl,
Are you asking for the inverse of \(\displaystyle f(x)=\sqrt[3]{x+1}\)
Does 'small 3 outside the square root' mean 'cube root'??
Denis said:Your typing is a bit difficult to follow...abcdgirl said:...1/4y-3/4=x ...
is that (1/4)y - 3/4 = x?
If so, then: y/4 - 3/4 = x ; y - 3 = 4x ; y = 4x + 3 which means slope=4 and y-intercept=3 ; got that?
Do you know how to graph the function and the inverse of the function
abcdgirl said:If so, then: y/4 - 3/4 = x ; y - 3 = 4x ; y = 4x + 3 which means slope=4 and y-intercept=3 ; got that?
Do you know how to graph the function and the inverse of the function
Draw the function y=4x+3 by taking two points . . .
The Inverse is the Symmetry of f(x) with respect to y=x . . .
="masters"]
Hi abcdgirl,
Are you asking for the inverse of \(\displaystyle f(x)=y=\sqrt[3]{x+3}\)
Interchange your x and y.
\(\displaystyle x=\sqrt[3]{y+3}\)
Solve for y.
\(\displaystyle x^3=y+3\)
\(\displaystyle y=x^3-3\)
Does 'small 3 outside the square root' mean 'cube root'??
abcdgirl said:Yes I just don't know how to use make the square roots with my keyboard
To get \(\displaystyle f(x)=y=\sqrt[3]{x+3}\), you type
Code:
[tex]f(x)=y=\sqrt[3]{x+3}[/tex]