"imagine whether" is correct and usable in written English.
You can use it to introduce a hypothetical situation or to express the possibility of two outcomes. For example: "Imagine whether we had made different choices - would our lives be any different now?".
I tried to imagine whether my own kids would want to come on the trip.
The difficult question isn't, as you might imagine, whether to opt for a carbon tax or cap-and-trade.
"When we design a dress, we try to imagine whether a man will whistle at the women who buys it when she wears it," Gabbana has said.
From the clearings, I could look down on Wuqi and imagine whether it might conceivably change as much over the next decade as coastal China changed over the last.
For example, they ask us to imagine whether it would be appropriate for two parents to celebrate the execution, by lethal injection, of the man who murdered their daughter.
It is up to the viewer to imagine whether it's the photographer's unseen breath -- now made visible in the flutter of the strings -- or whether the strings are being plucked by some other unseen hand.
But Mr Bezos applied what he calls a "regret minimisation framework", imagining whether, as an 80-year-old looking back, he would regret the decision not to strike out on his own.
Whether the threats were genuine or imagined, whether they were potentially serious or grossly overstated, they typically involved barricading the barn door after the horses -- however many had been lurking inside -- had fled.
Teams interviewed their clients, asking them to describe a dream toy a toy that they have always wanted and imagined, whether or not such a toy exists!
"That's beyond what anyone could have imagined, whether you're on the right or the left," he said.
It's a good reminder that you don't have to indulge in a goopy confessional mode to write a personal essay — you're more mysterious than you know, more naked than you imagine, and whether you intend it or not you're going to be exposed.
