Recently published items

Rewriting $\log_{10}\left(\frac{x}{y}\right)$ in terms of $\log_{10}(a)$ and $\log_{10}(b)$, where $a$, $b$, $x$ and $y$ are given.

Find the equation of a line given a point and a parallel line.

Solving a separable differential equation that describes the population growth over time with a known initial condition to calculate the population after $n$ years. 

Calculating the integral of a function of the form $\frac{a}{bx}$ using a table of integrals.

Integrating a function of the form $\frac{a}{x}$ using a table of integrals / anti-derivatives.

Calculating the integral of a function of the form $a_1x^{b_1}+a_2x^{b_2}+a_3x^{b_3}$ using a table of integrals. 

Calculating the integral of a function of the form $ax^b$ using a table of integrals. 

Drag points on an axis to plot a linear graph (integer gradient and intercept only)

Practicing skills required for sketching line graphs depicting DNA melting temperature according to the percentage of GC content. The question includes: a) identifying the  vertical intercept, b) choosing the accurate sketch from a list, and c) interpreting elements of the sketch in context. 

Rewriting $\log_{10}(x)$ in terms of $\log_{10}(a)$ and $\log_{10}(b)$, where $a$, $b$ and $x$ are given.